Computer not recognizing connected

[Taslow]

I just installed Rockbox on my e250r. After rebooting, rockbox and themes, etc. all work fine. But when I connect to the USB port on the computer, the player displays a USB icon, but my computer won't recognize that the player is connected. Help! I LOVE rockbox, but I need to be able to move music over onto the player without having to revert back to original firmware to connect. I'm running windows XP, FYI. Thanks in advance!!

[linuxstb]

http://www.rockbox.org/twiki/bin/view/Main/SansaFAQ#Does_USB_work