New laptops needed ASAP based on cost, need suggestions

I have an immediate need to acquire 4 or 5 NEW laptop computers, with a primary use of VPN, email and time-entry purposes... (yes, and as Homer Simpson was told, he'd need a top-of-the-line for that...)

I won't qualify for the "small business discounts" offered by Dell or HP, ect, so, I'm needing a bit of help finding a base-price for a basic laptop with the following:

Requirements:
Windows 7 Professional (or Enterprise)
dual-core+
non-mini / netbook (12"+)
2GB+ RAM
Warranty: 1yr+

Preferences:
non-ATOM-class CPU
lighter-weight
major name-brand
under $500ea
3yr warranty


I've been searching around, though I'm get'n tight on time and need to make a decision... thanks in advance =)