There are few things u can try....
1. Open command prompt and type the following....
Del H:\*.*/f/a/s/q
replace H with your pen drive Letter. And press enter. This will delete all the .ini and .bat files that are preventing your pen bieng opened. Make sure you've typed the things correctly.
2. Sometimes you could have noticed that your pen drive has been marked a FAT or FAT32 instead NTFS. This sometimes gives you a problem of bieng used. FAT and FAT32 are former methods of formatting drves before XP. Try simply changing your formats to NTFS as follows
Open Command Prompt and type the following.
Convert H: /fs :ntfs
replace H with appropriate drive letter.
3. Still if u have the problem, just format the pen as you format your Hard Disc. I mean Insert a bootable disc, XP, vista or whatever and go to partition creating part, make sure you've inserted your pen drive also. Then in the partition page you could see your pen with the Space available 2GB or something. So format that as you do to your HD partitions. And most probably you're there.
If you still face the problem mail me
[email protected] I'll help you further..... See yaa....