Is there a way I could convert a RO static to a UT2004 static? I could import UT2004 statics into RO but I can not do the other way around. Would I have to export them to say 3DSMax or Maya then back to .ace ?
Given they are -basically- both UE2.5, it shouldn't be that hard to cross-import them.. albeit it might be in poor taste. I blieve there are several modifications RO did to a few package formats to enhance the engine.. nothing to fancy.
Anything that won't straight-up-import into UT2k4, you'll have to export, then yes, maybe re-import via ActorX from Max/Maya/XSI/whatever.
The only thing I'll remind you to do is at minimum give proper credit to the original smesh creators, or ideally, ask the creators of those meshes for the right to use it in another product.
I have converted about 5 RO maps to DM (DeathMatch) for UT2004, am working on converting another 5 more. As for Static mesh, open the Static Mesh browser, select the Smesh you want and rename it using "myLevel" as the package. Go to the maps myLevel and add it to the map. Don't forget to myLevel the texture(s) that goes along with the Smesh also. This way all the needed packages are in the map package.