You can't really do that thru iTunes. iTunes does not sync docs.
You need a an App like FileMagic, AirShare, Docs To Go, QuickOffice, or others. They all have a Desktop version or a way to sync to your iPhone via WiFi. QuickOffice will even sync/download docs via MobleMe, IF you have a MoMe Account.
The above apps are all Paid for apps but there are others that are free in iTunes.
thanks for the quick answer, i just thought i was missing something. since i do not have a wifi on my pc, i'm stuck i guess. maybe just leave an email for myself with attachment, but will need to be not on airplane mode to read i guess. app paid for is fine, but wifi is still the issue. thanks for the help!