Yog: usb problem

hi
i have a 32 gb Hisun usb flash drive
it was working fine and then i decided to install xp on it using the bartPE program.

I had it in 2 partitions(public and private)I did this with the JFutility that comes with it.
So I used the JFutility to merge it back into 1 partition. this completed sucesfully.

However it formated it as a "RAW" file format. If I try 2 open it in my computer I get the error
"the disc in drive G is not formated. Do u want 2 format it now"
if i try 2 format i get the error
"Windows was unable to complete the format"
i have tried using fat/fat32 and quick/full format.
i have tried changing the drive letter to Z aswell

I then tried formating with the program
"HP USB Disk Storage Format Tool"

I get the same error

Any ideas any1 :?:
PLZ i need help :!: