I've made a secret pannel that rotates en brings out the hev suit. the
problem is that it obstructs the func_rotating and that it therefor
does'nt rotate. this is obviously a problem.

Have it rotate in the other direction then. (Hint: Look in the flags section)

I think I must have explained it wrong. imagin it to be a platform with
a wall upon. This is the func_rotating. the hev suit is on one side and
the wall blends in with the wall of the room. if the platform turns the
HEV suit becomes visible.

Ah, I see. Make the wall and HEV setup something like this:

P
    
 

---/*\---

• HEV

P = Player Start

/ = a curve stort of thing

This way, when it rotates you should get something like this:

P

---\*/---

this jpg should clarify things:

<!--thumb--><!--/thumb-->

Ah, I get it. Have you parented the HEV to the platform?