I found something more ideal, but it's not a PDA:
It's called an EEE PC. They have a keyboard. They're like miniature laptops, basically, and they come with Linux (Xandros) on them (but you can install something else, if you like, such as Windows XP). They have USB 2.0, so I suppose you could add an external hard drive for tons of extra hard drive space (they only come with up to 8GB, currently).
Specifications:
• Price is around $245 to $500
• RAM: 512 or 1GB
• Processor: 900 MHz Intel Celeron-M ULV 353 which has 512 kB L2 cache RAM, at 630 MHz (70 MHz x 9) cooled by a fan
• Hard drive space: 2GB, 4GB or 8GB
• High definition speakers
• microphone
• Wireless network card / normal network card (it's the same card, it seems)
• Camera (with the two higher models)
• Weight: 0.92kg
• 2.8 or 3.5 minimum hour battery
See
http://eeepc.asus.com/global/ for more information.
Read the criticism on the Wikipedia article, though, if you're a serious computer user. If you'd be satisfied with a normal handheld, though, you probably don't need to worry about this.
