Just managed to get shockwave to work properly with Origin. I was using disc images before.
On windows 7 I had all SWR Mods working properly (WG, SW, RotR, CG).

Where I'am so far:

Installed Generals Classic in the Origin Zero Hour/Zero Hour folder.
When I start via the launcher the CnC Origin menue pops up and I select ZH since this Mod works within ZH (as far as I understood).

Can someone point me out to what is going wrong here?