IBM ThinkPad's Compaq Evo's Dell Latitude's are the commercial grade for these major computer companies.
High end P-3 are as good as some P-4 systems.
Large amounts of Ram or large hard drives not needed for the average PC user, however upgrades are available to meet your needs.
Windows XP and Windows 2000 Pro are compatible with 99% of the software on the market.
14" screens 20-40 gig hard drives 256 ram DVD or CDRW 2000 Pro or XP Pro
Priced as low as $350.00 with 90 day warranty
Desktops
P-4 1000-2000 gigtz 20-40 gig hard drive 256-512 ram DVD/CDRW High Speed Internet Ready 17" Monitor XP Pro or 2000 Pro
Priced as low as $225.00 with 90 day warranty