[rudedog]

How are you trying to connect?
ingame browser
ASE
Game spy

Did you update SP to 2.11? could cause problems with AA?

Any mods installed?

I would do this
uninstall everything ( backup profiles and any saved games )
clean your registry of all MOHx entries
install MOH update it to it's final version
try connecting
then install SH
try connecting to both aa and SH
then install SH's latest patch
try connecting to both aa and SH

This way you can see where your problem lies

It's a lot of work but you will find out faster where your problem is by doing it this way.

Good luck