Today I tried out gmail, so I forwarded my .Mac to gmail's online email, it sent all my mac mail to the gmail server and then when I went to switch back my mac mail was "brought back" from Google's server and is ALL out of order, the most recent message is one I got probably 4 months ago, All my messages are there but they are stamped with "received today."
Is there anyway I can undo this, and get my mail back in order?
EDIT- *thanks for your support guys..*

After spending 1-2 hours on Apple's Support Chat, My support agent said the problem was unfixable.
She was wrong.
I deleted all my emails via MobileMe's online server and then forwarded my online gmail's inbox to my MobileMe address.
In the end, I out smarted an Apple Support Agent.
Is there anyway I can undo this, and get my mail back in order?
EDIT- *thanks for your support guys..*
After spending 1-2 hours on Apple's Support Chat, My support agent said the problem was unfixable.
She was wrong.
I deleted all my emails via MobileMe's online server and then forwarded my online gmail's inbox to my MobileMe address.
In the end, I out smarted an Apple Support Agent.