Ok, now I can't install my Kawai EX PRO on MC7... 
In Sonar, you just drop the file (tipe UVI Soundbank file) into the VST's folder, but here I do it and it doesn't recognize it. Help pls.

The location of UVI soundbanks is setup in UVI Workstation. Usually the sound banks are not in the VST path, the UVI Workstation dll must be in the scan path though. When installing UVI Workstation pay attention to the install path and either make sure the dll goes into the default MC7 scan path or add the path where the plug-in in installed to the MC7 VST scan path in preferences.

I'm looking for it, but I can't find any .dll file. Are you sure that UVI Workstation uses .dll files?

VST2 format plug-ins have a dll extension.

Hey, I did it. I have to reinstall the UVI Software like you said, and now it works. Really really thanks man!
And sry for doubting:'v