There have been some apps that will show the screen on the PC, but they always seem ot never make it out of Beta. Anyway, it'll only show the visible parts of the screen so it'd be an almost useless printout.
Try tethering your PC to your phone and browse the web on the PC. Double check that it won't cost extra to do this. On Tmobile it is free, AT&T will charge. No idea about Verizon.
Using BlackBerry As Modem - BlackBerryFAQ