FireFly released a new version of his USB Mass Storage program for the GP32. This version now has write support but only to a virtual smc in the GP32 memory. This is due to some problems writing to an actual SMC via the GP32. When trying the program and you access the drive on your PC dont worry about the message to format the drive, it will only format a virtual drive and not touch the actual smart media card.You can download this release from FireFly’s homepagehere.