looking for usb driver for a GE optical mouse (red), on it says 98353 WK2605. I have Windows Vista Home Basic operating system on a Dell vostro 1000.

Support Information:
Device Type: Input Devices (mouse, etc.)
Manufacturer: General Electric
Model: Retractable optical mouse 98353
Interface: USB
Operating System: Windows Vista
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=&qa5=9&qa7=1801&dp=3&qm0=Retractable+optical+mouse+98353&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=General+Electric+Input+Devices+%28mouse%2C+etc.% 29+General+Electric+Retractable+optical+mouse+9835 3+Windows+Vista+)

Did the mouse come with the pc (OEM) or is it an add-on device (retail)?

If it came with the pc, drivers will probably be available from Dell. If it's an add-on, you will need to visit the vendors website for drivers.

Jasco is the vendor for GE products but this device is not listed there: (a good indication it's OEM [came with your pc])

http://www.jascoproducts.com/support/software-downloads.asp#mice

So you probably need to check with Dell. (support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen)