Help with DSL and psn NAT 3

Ok so i have went through alot of defferent setups,DMZ,ports forward,bridged etc.Nothing seems to get me lower than NAT 3.Sorry for not telling earlier but my set up is embarq/centurylink DSL embarq 660 modem,linksys WRT54G v5 wireless router.I have no issues with any of my wireless stuff "exept not being able to accept or send invites on certain games to certain people on my ps3".When i did call tech today 2 hr call we bridged the modem but after that i couldnt connect to internet with any of my wireless stuff.If someone could please give me some advise it would be nice.If not what would be the best budget freindly replacements for my modem and router.Thanks to all who help.

Ok so can someone tell me what modem and wireless router to buy so i will have no issues with connections?

Yeah the playstation site is screwed today lol.aAnyway when we connected my router back up to the modem after bridgeing everything quit working no online anywhere.Are you using a wireless router also?If so please tell me EVERYTHING you did and i will try it.If it would be easier i can send you my PSN and we can chat there.Thanks for your reply.

Try enabling UPnP on both router and console.

upnp enabled disabled same thing NAT 3

Ok that's weird. Anyway here's a link hope this will help.