Connection to Server

Ive been having problems the past 2 weeks getting good connection. Every day for 2 weeks it's said that I have poor connection. The problem isn't connecting to the internet, because i have full connection to my internet. Also, when I play ps3 online i have no troubles, so im thinking that there must be a problem connecting the Halo 3/Reach servers. Does anybody know where i should start?

So it's just when you play Halo 3 and Reach? No other games or consoles? If it was other games on your xbox it could be a problem with your nic on the xbox. If it's JUST halo/reach then I would try different servers.....

On Xbox I only own 2 games; Halo 3 and Reach, so I haven't been able to test connection with other games. I'm thinking that the problem is a faulty connection to whomever runs the servers for Halo because whenever I play my PS3; while using the same internet provider, I have no problems.