calderus

ok here goes, i have an older dell XPS gen4 that still runs beautifully. i recently moved to a place where hi speed was available and i now have 3 computers networked with a linksys nr401 4 port router. the other 2 computers score very high if i use a speed test (speakeasy) but mine scores ALOT slower (like 1200 compared to 7000) ive updated drivers and even compared the settings on the other 2 computers net cards to mine and im stuck. any ideas??