i'm looking for a pda i can find used for cheap that will be fun to mess around with. i want something i can load my own OS on, hopefully it should come with wireless connectivity, i want to be able to hold some MP3s and play games and write/type, just basic stuff like that. i've been looking at the iPaq 3835, seems to be pretty nice. i don't want to spend more than $150 for the unit/charger/dock/wireless card. i'm open to all suggestions, let me know what you have and if you like it.