All I can really say is get one that you can part with. I try to stay in the $500 range for mine. I won't feel too bad when something happens to it. I helped someone pick out a $7000 MAC TiBook a few years ago. The hard drive failed in it , just like any other laptop. You still want to take care of it but, avoid "investing" lots of cash on one. Most of the internal parts are the same.
I know ACER and Gateway are doing pretty well right now. I think I would rather have an acer, based on friends of mine experience with them. If it has any version of Vista, try to get one with at least 1.5 gigs of RAM.
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FatWallet Forums - Hot Deals -
Slickdeals.net
AnandTech -- Hot Deals
These are a few of the deal forums I visit to save money. I had to stop going there because of all the money I was saving. I see laptop deals in there all the time.
Avoid letting sales people up sell you on everything. No, you don't need extra software and definitely not anti-virus. You will uninstall whatever it comes with and put this on it.
AVG Free Advisor - Free antivirus and anti-spyware downloads
And run this on it
yorkspace.com » The PC Decrapifier
There is even a free Office version you can install.
OpenOffice.org: Home
This is based on the source code from Office 2000 that sun microsystems obtained years ago.