First this post isnt a "Why is my system so dope?" This is just about seeing what peoples rigs can benchmark.
I saw Inferno2000's 3DMark score...Wow! Now that is one "dope" system.

My score thus far in 3DMark: 3054
My specs on the sig line.

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Whaazzzupppppppppp!
Asus A7V
Duron 800@904MHz
384 MB SDRAM PC133
Samsung 48x CD-ROM
Toshiba 12x DVD-ROM
Zip CD650 USB 4/4/6
Zip 100 USB
Maxtor 20.4 GB ATA100
Voodoo 4 4500 AGP @176 MHz
Guillemot Maxi Sound Fortissimo
SIIG 3 port 1394 PCI Adapter
D-Link DFE-530 10/100 NIC
Creative Cambridge Soundworks FPS1000
MS Intellimouse Optical
Kleer 17-inch @ 85Hz 1152x864x32 desktop

i'm have a bottleneck in my system or something with Win2k, i get around 3400 in Windows 98SE and Windows ME is about the same. in Win2k Pro i get around 1700-2000, anyone know why?

I think its cause of the way the OS cores are programmed. Win9x is targeted at the home, so stability is sacrificed for speed.
Win2k seems to be another beast entirely. Microsoft didnt target it as a speed demon, and more for businesses so keeping the pc up and running outweighed the need to have the fastest OS. However, Inferno2000 just posted a score in the mid 7000's. I think he's running Win2k.

I tweak the swap file, overclock, use X-setup's enhancements like enabling ata66 under win2k, some cache settings.
This might seem obvious but, do you defrag your hard drive?