Thanks. You just solved my problem.
When i enabled DMZ, i always set 192.168.3 as my DMZ host (which was ip adress of my crashed comp, now that i think about it).I changed it to 192.168.1.2 and now it works. Still strange though, cause when i tried setting to .2, it failed before. Also there was a time i could access ports with both computers. Still need to solve that thing with accessing 192.168.1.1 with IE too and the yellow status light of bittorrent.
Ah well, atleast my main concern is solved. Thanks for your help.