I just reformatted one of my drives to FAT32 and I modified fstab so that I have write privilages as well. The problem is that I only have partial write privilages as a regular user and under root, Azureus seems to have a problem writing new files. Here's my current fstab file:

/dev/hda2 / reiserfs acl,user_xattr 1 1
/dev/hda1 /windows/C ntfs ro,users,gid=users,umask=0002,nls=utf8 0 0
/dev/hdb1 /windows/D vfat iocharset=iso8859-15,users,gid=users,umask=0002 0 0
/dev/hda3 swap swap pri=42 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
proc /proc proc defaults 0 0
usbfs /proc/bus/usb usbfs noauto 0 0
sysfs /sys sysfs noauto 0 0
/dev/cdrecorder /media/cdrecorder subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
/dev/fd0 /media/floppy subfs fs=floppyfss,procuid,nodev,nosuid,sync 0 0

I'm planning to convert hda1 to FAT32 as well to run Wine so I need to make sure I have absolute write power.

even though you give users write access to the fat drive, and when it doesn't work
with azureus i think its just a buggy problem ...
cause i have full privledges to my user, and my root user for all secondary fat
drives, and i also have the problem with azureus ...
what i did is was go into the opitions under files on the left and put the check
mark on "allocate and zero new files on creation" and i never had a problem
since ...

and all i use for my fat drives is the following :
hope this helps .. i know the azureus thing bug the hell outta me for a while ...

maybe the azureus problem is the same I had with aMule. It disappeared once I added 'exec' to my fstab line.

And since this question was about using wine and executing programs on a vfat partition (if I understand correctly) you may need 'exec' in your fstab as well