1	Microsoft Windows XP Professional with Service Pack 2 Min CPU: 233 MHz - Min HD Space: 1.5 GB - Min RAM: 64 MB More Rating: 3 reviews + Add to Shopzilla List	$80 to $300 Found at 24 stores
2	Microsoft Windows XP Professional SP2 OEM Min CPU: 233 MHz - Min HD Space: 1.5 GB - Min RAM: 64 MB More Rating: 3 reviews + Add to Shopzilla List	$115 to $474 Found at 13 stores
3	Microsoft Windows XP Home Edition with SP2 Full Version Min CPU: 300 MHz - Min HD Space: 1.5 GB - Min RAM: 128 MB More Rating: 5 reviews + Add to Shopzilla List	$83 to $230 Found at 21 stores
4	Microsoft Windows Vista Ultimate Full Version Min CPU: 1 GHz - Min HD Space: 40 GB - Min RAM: 1 GB More + Add to Shopzilla List	$165 to $412 Found at 13 stores
5	Microsoft Windows Vista Home Premium Full Version Min CPU: 1 GHz - Min HD Space: 40 GB - Min RAM: 1 GB More + Add to Shopzilla List	$93 to $303 Found at 17 stores
6	Microsoft Windows Vista Ultimate 64-Bit OEM For PC Min CPU: 1 GHz - Min HD Space: 40 GB - Min RAM: 1 GB More + Add to Shopzilla List	$170 to $249 Found at 16 stores
7	Microsoft Windows 2000 Professional Min CPU: 133 MHz - Min HD Space: 650 MB - Min RAM: 64 MB More Rating: 46 reviews + Add to Shopzilla List	$50 to $227 Found at 6 stores
8	Microsoft Windows XP Home Edition with SP2 (OEM) Min CPU: 233 MHz - Min HD Space: 1.5 GB - Min RAM: 64 MB More + Add to Shopzilla List	$83 to $190 Found at 8 stores
9	Microsoft Windows XP Home Edition Upgrade with SP2 Min CPU: 800 MHz - Min HD Space: 1.5 GB - Min RAM: 128 MB More + Add to Shopzilla List	$83 to $119 Found at 21 stores
10	Microsoft Windows XP Professional Academic Edition Upgrade with... Min CPU: 233 MHz - Min HD Space: 1.5 GB - Min RAM: 64 MB More + Add to Shopzilla List	$79 to $137 Found at 4 stores
11	Microsoft Windows XP Home Edition Full Min CPU: 233 MHz - Min RAM: 64 MB More + Add to Shopzilla List	$83 to $98 Found at 3 stores
12	Microsoft Windows Vista Home Basic Full Version Min CPU: 1 GHz - Min HD Space: 20 GB - Min RAM: 512 MB More + Add to Shopzilla List	$67 to $256 Found at 12 stores
13	Microsoft Windows Vista Business Full For PC ( 66J00002 ) Min CPU: 1 GHz - Min HD Space: 40 GB - Min RAM: 1 GB More + Add to Shopzilla List	$149 to $300 Found at 11 stores
14	Microsoft Windows Server 2003 - 5 CALs Min CPU: 500 MHz - Min HD Space: 1.5 GB - Min RAM: 128 MB More Rating: 1 review + Add to Shopzilla List	$98 to $165 Found at 6 stores
15	Microsoft Windows XP Professional OEM Min CPU: 300 MHz - Min HD Space: 1.5 GB - Min RAM: 128 MB More Rating: 28 reviews + Add to Shopzilla List	$115 to $238 Found at 6 stores
16	Novell SuSE Linux 10 Strong Encryption (128+ Bit) English + Add to Shopzilla List $20 at CompuVest	$20 Found at 1 store
17	Microsoft Windows XP Professional Upgrade with SP2 Min CPU: 300 MHz - Min HD Space: 1.5 GB - Min RAM: 128 MB More + Add to Shopzilla List	$169 to $219 Found at 21 stores
18	Microsoft Windows Vista Home Premium 32-Bit OEM Version Min CPU: 1 GHz - Min HD Space: 40 GB - Min RAM: 1 GB More + Add to Shopzilla List	$93 to $155 Found at 17 stores
19	Microsoft Windows XP Professional with SP2 OEM Version - 3 Pack... Min CPU: 300 MHz - Min HD Space: 1.5 GB - Min RAM: 64 MB More + Add to Shopzilla List	$136 to $474 Found at 5 stores
20	Microsoft Windows XP Professional Upgrade with SP2 - Academic... Min CPU: 300 MHz - Min HD Space: 1.5 GB - Min RAM: 128 MB More Rating: 1 review + Add to Shopzilla List	$88 to $99 Found at 2 stores