Network Drives

I am having a problem where I am loosing conectivity with a maped drive. I have 2 machines both running Win98. I have a maped drive looking at the other machine. I have a problem where the maped drive looses its conection to the other machine. If I reboot everything is fine. I have turned both screen savers off thinking this is might have been the problem. My next thing is to add more memory, and see what happens. Please respond back with any answers or sugestions.

Thanks,
Jason