Here is the full presentation on how to create a webservice

The buzz word around IT these days is Web Services. A web service is not a website that a human reads. It is not anything with which an end user would directly interact. A web service is a standard platform for building interoperable distributed applications. It allows you as a developer, to interact with other information providers without worrying about what they are running either at the backend or even their front-end. Take for example a company stock ticker that you may wish to have, say on your website or intranet. The data could possibly be coming from a major news site like MSN or NASDAQ. The way you would currently achieve this is either by buying access to their database or by ‘scraping’ their home page HTML for the relevant data and converting it into your format. Suppose they go ahead and change their web design, all the scraping code you would have written would be rendered useless. Even if you buy access into their system, they may be running a technology that is incompatible or too hard to work with your own.

Follow up the link for more information.

http://www.codeproject.com/KB/IP/intro2websvc.aspx

UDDI from W3Schools

What is UDDI
UDDI is a platform-independent framework for describing services, discovering businesses, and integrating business services by using the Internet.
UDDI stands for Universal Description, Discovery and Integration
UDDI is a directory for storing information about web services
UDDI is a directory of web service interfaces described by WSDL
UDDI communicates via SOAP
UDDI is built into the Microsoft .NET platform
What is UDDI Based On?
UDDI uses World Wide Web Consortium (W3C) and Internet Engineering Task Force (IETF) Internet standards such as XML, HTTP, and DNS protocols.
UDDI uses WSDL to describe interfaces to web services
Additionally, cross platform programming features are addressed by adopting SOAP, known as XML Protocol messaging specifications found at the W3C Web site.
UDDI Benefits
Any industry or businesses of all sizes can benefit from UDDI
Before UDDI, there was no Internet standard for businesses to reach their customers and partners with information about their products and services. Nor was there a method of how to integrate into each other's systems and processes. Problems the UDDI specification can help to solve:
Making it possible to discover the right business from the millions currently online
Defining how to enable commerce once the preferred business is discovered
Reaching new customers and increasing access to current customers
Expanding offerings and extending market reach
Solving customer-driven need to remove barriers to allow for rapid participation in the global Internet economy
Describing services and business processes programmatically in a single, open, and secure environment
How can UDDI be Used
If the industry published an UDDI standard for flight rate checking and reservation, airlines could register their services into an UDDI directory. Travel agencies could then search the UDDI directory to find the airline's reservation interface. When the interface is found, the travel agency can communicate with the service immediately because it uses a well-defined reservation interface.
Who is Supporting UDDI?
UDDI is a cross-industry effort driven by all major platform and software providers like Dell, Fujitsu, HP, Hitachi, IBM, Intel, Microsoft, Oracle, SAP, and Sun, as well as a large community of marketplace operators, and e-business leaders.
Over 220 companies are members of the UDDI community.

For more info follow up this article.
http://www.w3schools.com/WSDL/wsdl_uddi.asp

Web Services Description Language (WSDL) 1.1

WSDL is an XML format for describing network services as a set of endpoints operating on messages containing either document-oriented or procedure-oriented information. The operations and messages are described abstractly, and then bound to a concrete network protocol and message format to define an endpoint. Related concrete endpoints are combined into abstract endpoints (services). WSDL is extensible to allow description of endpoints and their messages regardless of what message formats or network protocols are used to communicate, however, the only bindings described in this document describe how to use WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.
Please follow up this article for more information.

http://www.w3.org/TR/wsdl

Here is the proffessional comparision and difference between C# and VB.Net

Hey,
I have been searching on web for a while on C# and VB.Net language differences.

I found these two articles were really useful.
Please follow up and find yourself in the comparision.

http://www.harding.edu/fmccown/vbnet_csharp_comparison.html
http://www.codeproject.com/KB/dotnet/vbnet_c__difference.aspx