well, i'd suggest u to look at the DSL-502T manual that's there in the CD...they explained it quite nicely how to do that...won't be a problem if u're hands are "saaf" in this 😉 but remember if u manage to screw it, then no one's gonna help in this forum 😀 so what i'd suggest is go to the configuration page and save the config...i think it's under "tools" page or somewhere, can't tell exactly as i'm using my sify connection right now...it has both the options of saving/loading the "config"...so first save the "config" and do whatever u want to do...i think every DSL-502T users should save it...it's always better to have the solution before the problem...so, in case it gets screwed, just put the head of a ball point pen in the reset button, at the back of ur modem, and keep it pressed for a couple of seconds...then it will reset to the factory defaults...then u can reload the "config" from that same page and u'll be safe 😀 though i've not tried this technique...just have saved my config, so don't curse me if it doesn't work still...hahahahaso the best, don't play with ur modem too much, else it'll play with u...