Bypassing Router Time Restrictions

Most recently there has been time restrictions put onto my wireless Linksys router. I do not have direct access to the router options via IE. All the computers connected to this router are on different time restrictions (with my internet going out the earliest). I have gone as far as changing my IP, workgroup, computer name and taking my computer off an 8-port Linksys switch. Also to note: any foreign computer connected to the router has absolutely no internet restrictions at all. Is there a way around this?

Unfortunatly my knowledge for networking is very limited. How does one change the MAC address? I would assume going into the XP registry?

EDIT: Ah, I figured it out myself. Downloaded Mac Makeup and it instantly changed my MAC and brought me to the internet.