problem with oracle and jsp

hi,
i am new to jsp. i have sun one webserver. i connected jsp and oracle. but i got errors like "class couldnot fount"
and package does not exists.
i tried toomany times with class path chage and restart the computers.pls help me
to resolve the problem.i am too confuse.pls it is very urgent pls help me.

pls give step by step explain. plsssssssssssssssssssssssss.

You should give us some more information. Start by telling which class could not be found and give a bit of your code where you have these errors.