Floppy Disk Image to USB Flash Drive?

[Format _C:]

I found an older Dell Dimension 2400 (From 2003)
I have to update the BIOS and while the computer can boot from a USB Flash Drive the BIOS file from Dell requires I have a 3.5" Floppy disk. I have tried using the tool to create a disk by selecting the drive letter of the flash drive but I get an Disk Image size mismatch error
So my main question is there a way out there to make a floppy image work with a USB Flash Drive? Preferably a way that does not require an actual floppy disk as I don't have any although the computer does have a 3.5" Floppy drive
Thanks

 

[mwroobel]

http://www.softpedia.com/get/System/Boot-Manager-Disk/BootDisk2BootStick.shtml

Will let you take a floppy .img file and write it to a USB stick. It should work on most USB implementations.