Manually Manage iPod Touch help

Im wondering if using an iPod Touch am I able to do the following;

I want to have it similar to my other ipods where I could Manually Manage Songs and Videos (by just dragging in dropping the songs/videos onto the iPod in iTunes using both OSX and XP)

I have to use various computers/OS during the week (and sometimes during the day) and im wondering if i plug in my iPod Touh into my MacPro (OSX 10.4 and XP) could i transfer songs onto it under BOTH OS' without having to restore it each time ic onnect it?


*im not syncing to a library or anything, im manually adding tracks myself*


thanks!