Yeah, it's supposed to do what you described.

Hmm....it works just fine for me. Did you create a New Document Class? I think .cpp is in there by default so there's no need to create a new one. If not, here's what you do:

Go to Configure->New Document Class
Call it whatever you want (I'd suggest VC)
Then in the next screen type: *.vc
In the next screen click Enable Sytnax Highlighting and choose vc3.syn from the drop down menu

And to edit all the colours you can go to
Configure->Preferences->Document Classes->VC(Or whatever you called it)->Colours
And the rest is pretty self-explanitory.

Also you might want to get the latest one from the files section. I just uploaded version 1.3 a couple of nights ago and forgot to mention it. ^_^;

w00t.

In that case you might want to add:

"Make sure that vc3.syn is in the 'system' folder of the directory textpad is located in."

Or something along those lines. ^_^