XP with MS wireless router

Hi there,

I have been trying to figure it out what is wrong for over 2 weeks. I bought a new computer with XP Prof and a MS wirless router. I also has a laptop from my work with windoiw 2000, and network on my laptop using domain.
I am trying to build a network between those two computers to share files and internet from cable modem at home. It was pretty easy to enable internet sharing (without ICS), but I have to install "Service" or "Client" under network component"client for MS network" under local area connection properties on home computer to let my homecomputer files to be seen on my laptop. Also, I have to logon as "admin" on laptop without company domain (as standalone laptop), otherwise I can not access to home computer's files (probably because of netwrok domain security).
OK, that was a long story. Here is the problem, my homecomputer starts shutdown/crash after that...
and I am trying to find it out where is the problem. did I done something incorrect? or it just MS wireless rounter's (model #:MN500) problem....

Any suggestion?

Chsieh