You say that you want to be able to access the drives wirelessly. Do you mean without the drives physically connected to a PC? If so, does this mean that you have a network box that that wil support netowrk drives?
WRT FAT32 / NTFS. NTFS is the default file system for WinXP and beyond.
FAT and FAT32 are older file systems that are deemed less robust. Unless you need to access files from older systems that only support FAT32 or FAT, NTFS is recommended. I know that doesn't help solve your issue, but just background info.