FurryNutz- you are DA MAN! I had posted my dilemma on 8 different forums (router forums, DSL forums, gaming forums, etc). And every answer was always "nothing you can do about it". You are the only one that connected the dots of the DSL-modem/router issue.
Got the modem/router bridged. Followed your instructions in the sticky (but using TCP and UDP numbers for the Wii of course). And all I can say is WOW. The Wii is playing online so much better! In 8 months of online play, I was never chosen as the host. I played 3 games last night and was picked as host for all of them. But even non-host, the online play was a night & day difference
Let me tell you about getting it done- I'm sure you'll appreciate this little story.
So after work I go home and call my ISP to get the modem's router bridged. So I get tech support on the phone and tell them what I want to do. He says "you must have a different modem than we supplied, because the Speedstream 4200 does not have a router". I tell them that yes it does have a router in it. He doesn't believe me, tells me to physically pick up the router and tell him what the sticker on the bottom says. It says "Speedstream 4200 and the part number". He then says "Yeah, that is the right part number. But that modem does not have a router". I tell him that it most certainly does. He puts me on hold.
He comes back a bit later and says "OK, it does have a router. But I told my boss what you needed to do, and he said to tell you 'no, the modem's router needs to be in control, not your home router'". I then opened up this thread and read to him exactly what you had written. He put me on hold again. He comes back and says "Look, my boss has 20 years of home networking experience and says that he has never in his life heard of the modem's router causing any sort of issues. And you need to just leave it alone." I told him that it was an issue with gaming, and that my D-Link was far superior to the modem's router, and the D-Link needed to be in control, not the modem's router". He puts me on hold again
He comes back and says "OK, here is what you need to do to bridge it. But I have to warn you- if you do this, you are on your own. If you have any problems, don't bother calling us for support because we won't be able to help you. If you have any problems, you'll have to call D-Link for support, The minute you bridge this modem, its not our problem any more. Are you sure you want to do it?". I tell him "yes". He says "OK- you have the info. I'm going to end this call now. You're on your own".
LOL- wow! just wow!