HELP with backing up insecure data for Y2K12 Loop Festival

[Rick Walker <looppool@cruzio.com>]

I have a 5 year old MacBook Pro that is really starting to fall apart on 
me.

I've faithfully used to back it up but it's looking like it's time to 
jump ship and get
a new laptop.

My problem is that all of the Y2K12 Loopfestival Data is all in my 
Mozilla Thunderbird email client
installed on OS X and I"m having fits trying to move that data over to 
my WIN 7 quad core desktop
computer.

I have the MBP  stuff backed up on my TIME MACHINE external harddrive 
but my
PC running WIN 7 won't recognize the data (USB 2.0 connection).

Neither will the MBP let me migrate the data to my  WIN 7 backup 
portable Hard Drives (I understand
that the Fat 32 system will not recognize the NTFC or NTSC file systems. 
(spelling?).
I can transfer files from the WIN machine to the OS X, but I can't going 
the other direction which
is the problem.

Can anyone recommend to me how I can get my 14 gigs of backup e-mail data,
email profiles and, most importantly,  my email addresses from the MBP 
to the WIN 7 machine.

I downloaded the proper import/export tool as an add on to both the MBP 
and WIN 7 versions
of Mozilla Thunderbird, but just can't figure out how to get the data 
from one computer to the next.

Thanks for you help.................I'm very nervous about getting this 
data transferred before my
MBP finally bites the dust.

yours,  Rick Walker