Basic PPC Phone questions

[lovingHDTV]

All,
I think this is where I should post, if not sorry.

When talking on the phone, can I also compose/send email, lookup contacts or am I stuck doing nothing but talking on the call? This is the biggest thing I'd like to be able to do with the phone.

If sending email would it have to happen over wi-fi if while on the call or can it send email and handle the call at the same time. I'm looking at the CDMA version of the phone, but if it matters I could always go T-Mobile (GSM) to get this functionality.

thanks,
dave