Copy Mac iTunes library to Windows iTunes library on External

I searched through the forum and found some helpful links

moving iTunes Library in Windows

moving iTunes library in Mac

http://www.tuaw.com/2006/09/19/how-to-keep-your-itunes-library-on-an-external-hard-drive/

iLounge

and have been able to consolidate my XP SP2 Windows iTunes onto a USB external HD. I want to copy my MacBoook iTunes library to the external, which is formatted FAT32. Tried hooking up the external HD to the Macbook and consolidating library, but that did not add/copy the MacBook library over.

I am missing something obvious here. Do i need to partition External to a different format?

To summarize the question, how can I add/copy a Mac iTunes Library to an already consolidated iTunes Library from Windows that now resides on an external FAT32 HD?

Thx in advance!

 

MB C2D 2.0 (Nov. 2006) 80GBHD (30+ Gigs of music)
APE Wireless N
XP SP2 Box 120GB HD + 40GB HD, no FW ports
Lacie 500GB HD USB only, currently formatted FAT32 with 29 GB formatted for Mac
Lacie 250GB Little Disk with Disk Utility Backup of MB, and rest is Free Space