Ok, your main computer will connect to the net right?
Sounds to me like you need to set up a static IP address. I had your exact same problem and set up an IP address and everything was fine.
If you dont know how, refer to this page... http://www.portforward.com/networking/staticip.htm
I have the same problem! Only my scores are alot worse...
:::.. Download Stats ..:::
Connection is:: 980 Kbps about 0.98 Mbps (tested with 2992 kB)
Download Speed is:: 120 kB/s
Tested From:: https://testmy.net (Server 1)
Test Time:: 2006/05/28 - 9:16pm
Bottom Line:: 17X faster than 56K 1MB Download in 8.53 sec
Tested from a 2992 kB file and took 25.015 seconds to complete
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; InfoPath.1; .NET CLR 1.1.4322)
Diagnosis: May need help : running at only 33.83 % of your hosts average (bellsouth.net)
Validation Link:: https://testmy.net/stats/id-L3DW6HBMG
and I have nothing else running but this when I do it.