Nat issues please help

every time i have had it go to strict nat i would turn off my modem for about 60 secs and then it would make it open once i had turn the power back on.but this time it hasnt done this and i did a search on here but it gave info i knew already as i had used it to create a port for my xbox. so i went on xbox support but they only passed the buck saying i should contact my internet provider(AOL) but they couldnt help since they have a call center in India and thus the person on the other end couldnt hear me even though i could hear them anyways.if anyone can help please let me know how i can sort this problem out thanks.

What router do you have? - It would help so we can give specific instructions.

However, the easiest way is to go into the router configuration pages, assign the Xbox a static IP on your home network and then put it in the router's DMZ.

If your router supports it, port trigger rather than port forward the following ports:

Port 88 (UDP)
Port 3074 (UDP and TCP)
Port 53 (UDP and TCP)
Port 80 (TCP)

done both of those since it was in the info on how to open a port. i spoke to a xbox person and they said that i could turn off my modem for 5mins and then switch it on again and then do a re set up and hopefully this should work otherwise i cannot race(my modem is a speedtouch if that helps)

*update*
i have finally sorted it and now its back to open nat setting and i think if this happens again i will know what to do which is turn off my router for 5 mins and switch it back on.then i do a re setup on the xbox.