I'm kinda new to this... so last month we finally bought a router, a Linksys WRT54G.. It's been workin fine up until two nights ago, when it suddenly stopped routing. The internet connection's fine when I plug it into the modem directly. Anyway, my kid bro tries to fix the problem by himself, and accidentally changes the subnet mask.. So now, every time I try to access Admin to change it back, it won't let me through! How can I fix this situation?