I was wondering if a new wireless card would improve my Mbps,I can currently connect at 18Mbps wireless using the D-LinkAirplus DWL-G520 rev.B in my Desktop.Using Cat5 I get 7Mbps with the 3com 3C900B-TPO ethernet card.I have a Laptop that get 25Mbps wireless and 50Mbps using an ethernet cable plugged directly into the Belkin N600 DB router.If I were to upgrade the ethernet card and cabling I'm at about the cost ($29) of a new DWA- 525 (I currently have an approx.15ft cat5 and would need a 25ft. to rig it permanent).The Desktop is the one in my sig,so would there be any improvement in going the new wireless card or is my OS/old Hardware limiting any potential increase in Mbps?


Note:Mbps were gotten via speedtest.###

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WinXPpro
IwillKK266+
VolcanoII/RadioShack paste
1.2ghz 266DDR T-bird @ 1.4
384 MB PC133
Maxtor 200GB
16XDVD
Plextor 712A DVDR-W
ATI X700Pro 256MB AGP
Samsung 931bf 19" LCD