Theoretically, yes, but W98 is no longer supported, so if there is a cdrw drive available use that, or remove the hard drive and connect it up to your PC and copy the pictures that way
98 doesn't natively support external drives of any type the manufacturer of the drive is responsible for producing drivers.
It's something to check before you buy an external drive of any type ... not all drives have 98 support
If you use a router to access the internet and have network cards fitted to both machines ... just share a folder and copy them that way
if not a crossover cable is cheap ...