Windows FTP access into 2nd internal HD

How do you set FTP access into a secondary (internal) hard drive? I am able to set up a user account and can log in (from Windows WS-FPTpro) into that users account (on the main HD), but is it possible to allow them to get into the secondary internal HD?

I checked the "get info" and tried changing the "Group" to the user account, but I still can't get into the drive from my windows machine.

Is this possible with the built-in FTP server in Mac OS 10.3.9??

Thanks

G5 - Dual 2GHz Processor Mac OS X (10.3.8)