I installed the patch but when im trying to go on wormnet .The game say (the server could not verify your cd.You cant play online.

It sounds like you've either patched the wrong version or patched a pirated/illegal game.

Note that the TryMedia version CANNOT be patched and may produce an error like this.

Note that the TryMedia version CANNOT be patched and may produce an error like this.
The Trymedia version of WWP doesn't need to be patched anyway.

The Trymedia version of WWP doesn't need to be patched anyway.
And thus it would probably produce this error.

As far as I know, the TryMedia version of WWP is fully-functional for online play, as it is pre-patched and there were no WWP updates after it was created.