motherboard - new computer

I'm considering buying this computer and was wondering whether or not this motherboard is decent. I have some concerns regarding its upgradability.

Mid Tower case W/Power Supply (300 watt)
Intel PIII 800 EB
Asus P3V4X Mother Board
512 meg PC133 Ram
40 gig Western Digital Hard Drive
52x CD Rom
CDR/CDRW Asus 16x10x40
1.44 Floppy
Nvidia G-Force 64 meg AGP Video
Sound Blaster Live Sound Card
USR 56k Modem
D-Link 10/100 Network Card
Keyboard, Scroll Mouse and Speakers
Windows XP Home Edition Installed
$575 (Canadian $'s)

 

I think the fastest you can go is with a 1Ghz. PIII processor on this Slot1 M/B.