QUOTE (Alan @ 9-6-09, 7:49am)

Typically any new computer from Dell, HP, Acer, etc. will come with a keyboard & mouse.
Take a look at the HP or Acer models with a Core2Duo or Quad Core processor. I've had several people buy the HP models over the last few months and they've been very happy with them. I don't have specific model numbers.
One thing maybe to be aware of is that some of the Intel processors do not have VT technology (virtualization) which is required if you want to use XP Mode in Windows 7. If it's not important to you then don't worry about it. But, if you want to know, just post the model of the processor and we can look it up

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List of Intel processors supporting VT-x from
Wikipedia:
Intel Core i7 (Bloomfield) CPU Pentium 4 662 and 672
Pentium Extreme Edition 955 and 965 (not Pentium 4 Extreme Edition with HT)
Pentium D 920-960 except 945, 935, 925, 915
Core Duo T2300, T2400, T2500, T2600, T2700 (Yonah)
Core 2 Duo E6300, E6400, E6320, E6420, E6540, E6550, E6600, E6700, E6750, E6850 (Conroe)
Core 2 Duo E7600, E8200, E8300, E8400, E8500, E8600 and some versions of the E7400 and E7500 (Wolfdale)
Mobile Core 2 Duo T5500, T5600, T7100, T7200, T7250, T7300, T7400, T7500, T7600, T7600G, T7700, T7800 (Merom)
Mobile Core 2 Duo SU9300, SU9400, SU9600, P7370, P8400, P8600, P8700, P8800, P9500, P9600, P9700, T8100, T8300, T9300, T9400, T9500, T9600, T9800, T9900 (Penryn)
Core 2 Quad Q6600, Q6700 (Kentsfield)
Core 2 Quad Q8400, Q8400S, Q9300, Q9400, Q9400S, Q9450, Q9550, Q9550S, Q9650 and some versions of the Q8300 (Yorkfield)
Core 2 Extreme X6800 (Conroe_XE)
Core 2 Extreme QX6700, QX6800, QX6850 (Kentsfield_XE)
Core 2 Extreme QX9650, QX9770, QX9775 (Yorkfield_XE)
Xeon 3000, 5000, 7000 series
Atom Z520, Z530, Z540, Z550, Z515 (Silverthorne)
all Intel Core i7 processors
Pentium Dual-Core E6300, E6500 and some versions of the E5300 and E5400*
Celeron E3000 series
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I'd expect maybe the easiest VT-compatible quad core to find presently at a decent price would be a Q8400 (maybe as an upgrade on a good priced Q8300 system?).
QUOTE (Alan @ 9-6-09, 7:49am)

Can you wait or do you need the computer now? Oct. 22nd is the general release date for Windows 7. Although a computer purchased today will likely qualify for a Windows 7 upgrade, why go through the hassle of installing it yourself. Get it already installed IMO.
Also, I've personally had some issues with 64-bit Windows. In fact yesterday I built a new PC for myself and installed 32-bit Windows 7. The only real advantage I see to 64-bit in a home computer today is the ability to access more memory, but the 3GB that 32-bit can address should be way more than enough.
Another reason I'd personally wait until after October 22nd to buy in absence of an emergency is to save a few bucks by getting Win7 pre-installed. There is no doubt in my mind that all the big manufacturers are going to charge shipping -- probably excessive -- for the media for those "free" Windows 7 upgrades (I've already seen several media reports quoting HP's shipping charges over in Great Britan as 27 GBP per unit -- about $45 US at current conversion rates!). I wouldn't expect it to be that bad here, but I do expect most will charge $20 to $30 for those "free" upgrades.