cant access resources

i have configured a windows 2000 VPN server, i can access my Server using Admin accnt and also access my resources, but i cant access my LAN. i can see my LAN from my win98 workstn VPN client but i cant access it, if i double click the computer i want to acces it will say, “the computer or sharename could not be found”

please reply to my e-mail tumulak@yahoo.com