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Apex coding
Testing sales force login using Apex Web services API
How to login into Sales Force using the web services API
can any one suggest me How to login and what are the settings I have to do to run
the Apex scripts
please give me the code samples as well
http://wiki.apexdevnet.com/index.php/Documentation
and here
http://www.salesforce.com/us/developer/docs/api/index.htm