$ddename does returns mIRC, and $version does return 6.35, but $dde gives an error:
* $dde: insufficient parameters

I understand about the Security Risk, its just "strange" that running mirc.exe with no administrator privileges DDE works just fine, but running mirc.exe as Administrator then it doesnt work.

By your answer im gessing you are saying that the problem does not resides on mIRC but on the OS itself.

Thinking about it, you may be right since it works just fine on Windows XP.

Thanks for the fast reply.