The Worst thing in the world!!!

[lol]

I wasn't sure if there was a section for this but....
For some reason, I can't join or create any games on Halo!!! Not even on LAN!! Now I had this problem before simply because my IP adress hadn't been entered so I emailed MacSoft for help and they haven't replied yet. And I sent that like last weekend. So I've just been playing on my family iMac.
Can anyone tell me what is wrong?

[{§}V3NOm{§}]

ya..dont rely on macsoft or any big corporation like that...they will reply in like the next month or so..and sorry i cant help you out im on windows xp and im already have troubles with some stuff on my computer..