HELP! can't use internet

I am having a problem with getting IE to go online now. I
had set up client filtering as a test for one of my
computers. It was working fine B4 I did this so that is
how I know that it is the router causing the issue. I
removed all the settings I had set and then hit apply,
but it is still acting like the settings are in effect. I
had set it to block ports 80-81 from 1am to 7am. I am
still able to get my email through outlook on this
machine and I can connect to it on my home network just
fine.
I have the MN-500 wireless router,
*firmware is up to date
*I have reset the router
*I have taken the cat 5 out of the router and plugged it
directly into the computer and it is fine.
* I run IE 6 on Win XP SP1

I have tried everything that I feel could be the problem
and nothing works. ANY help would be great.

Thanks in advance