My friend and I are having Halo 1 server problems?

[Noah Owen]

I'm on a Windows 7 and he's on a Windows Vista computer and when he makes a server it's not on my server list and whenever I try to make a server it says my CD key is invalid. We really don't know what to do. We're also using Custom Edition.

 

[Nick Mcdonald]

Whata douche ^

 

[Handy]

Ohhh i know what to do you have to shut up and sleep and maybe it will work