you can sync you mail account settings to your ipod through mobile me/itunes i think, but you have to download the mail manually / time period based unless you get your work email to auto forward to your mobile me email box, then it will get pushed down.
Vey strange that i dont get an idisk icon on my desktop, but i got all the push stuff woking great on my ipod and mac, its semi working on my PC but i think i might take it off there as i dont need it. My MBP is useually parked next to my PC if im on it!