Where to find FAT32 formatting files?

I’ve just purchased a My Passport Essential drive on the advice that it can be formatted to serve both Mac’s and PC’s. I regularly work on large files on both platforms and want one location for them. I have also read about the reformatting to FAT32 to facilitate this process but can’t find the driver files. If anyone can help I would be very grateful.

Many thanks

PaulNick

http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_faqid=1364&p_created=1117047065&p_sid=PdoaGpSj&p_accessibility=0&p_redirect=&p_srch=1&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MjIsMjImcF9wcm9kcz0yMjgsMTk1LDI1NCZwX2NhdHM9JnBfcHY9My4yNTQmcF9jdj0mcF9wYWdlPTEmcF9zZWFyY2hfdGV4dD1mYXQzMiBmb3JtYXR0ZXI!&p_li=&p_topview=1

Works on XP, not sure about Vista and Win7.

Does re formatting, so the drive is compatible with both Windows and Mac work well? I see WD does not recommend this.