TCP/IP, Windows XP Home, Dell and Service pack 2

OK check this out, I am working on a Dell Dimension 2400 with Windows XP Home on it.  After a long drown out phone call with Dell I fixed one problem only to find a new one. I installed Service pack 2 on this system and it wold not connect to the net via DSL. I get the message "Failed to Query TCP/IP at this connection" I also see error code 10047. I tried to add simple TCP/IP in add remove programs and it gets to a point ware it stops.  It always stops at the part that says it is trying to install the network monitering something rather it hangs there then says service did not start in time installation will continue but may not work untill service starts.  Not really sure. I am not in front of the computer. I tried to remove the network card (on board) and all drivers and reboot.  I reinstalled everything and still did not work. I need to know how to get the TCP/IP right again. I even deleted the tcpip tree in reg. and reinstalled it. NEED HELP!!!! I called Dell back and they said they do not recomend installing service pack 2. I uninstalled service pack two and this is ware the problem begains.