>if that is right, what's class i sould take, can u give me some idea ?

If you want to stay within VFP and learn about Internet applications, Double Impact should be high on your list. Its from EPS and West Wind.

If you want to go to a conference, look at:
http://www.devconnections.com/asp/default.asp?refer=
You'll have access to both ASP and XML sessions (ASP being an MS technology and XML being an internet standard).

For training classes, check out http://www.creativedata.com/training/