4GB only shows as 3.25

[cjshaw]

I just upgraded my Asus P5K MB from 2GB to 4GB using MEM 1Gx2|G.SK F2-6400CL4D-2GBPK R from Newegg, same part # as originally installed. The BIO shows 4GB but when I look at Properties under My Computer it only shows 3.25GB, I'm running Win XP SP3 32 bit. Is there anywhere I need to make a tweak to get the full 4GB recognized?
Thanks

[GSKILL TECH]

Windows 32 bit can only address up to 3.25GB, so you will need to upgrade to 64 bit, then it will show the full 4GB+

Thank you
GSKILL TECH