PC laptop

We have almost all Macs in our house -- 1 Dell PC I bought 4 years ago is the exception. I think we have 8 or 9 Macs although not all are in use any longer. My sons like to play Runescape on the PC, so one of them decided he wanted a laptop. The lowest end Macbook would be close to $1000 new, so that didn't seem like a good option. Another possibility is to replace the hard drive in a 12 inch G4 Powerbook. I already have the drive, so there would only be the time involved in doing the work, something I've been putting off for months. A third option is a PC laptop. There are quite a few of them at around 500 - $600, but in most cases they don't seem like they would do a whole lot more than the G4 laptop. The other thing is that these PC laptops don't seem to come with much in the way of software. Most have Windows Vista Home Premium, although some have the Basic edition. Added to that is the trialware and usually a limited version of Microsoft Works. Not much of a deal. I think you get more with a Mac laptop, although I could download freeware/OSS like Picasa and Open Office and get what would be reasonable on the PC. It just seems like you don't get too much for the low price.