my suggestion go and get yourself a linksys gateway, dlink's are notorious for over heating and loosing their ip addy...
right click on the files you goto properties goto network tab put put a check mark in the share the file on the network, left click on network then every pc on that network should be able to see that hard drive or file under my network places...
you may need to create account permissions to allow peeps to access the acer on the network if what i 1st suggested doesn't work...