Networking between ME and Win2000 Prof.

I have setup an Wireless LAN with a DSL modem and a Speedstream Wireless Router/Access Point. Total of 4 computers 2 Laptops & 2 Desktops. Only one laptop has W2k the others Windows ME or below. I have created a Workgroup under Windows ME and allthe computers except W2K can access. I can see the workgroup from W2K, but can’t access resources….I have setup W2K under the same workgroup name, but still can’t access. I have also added a user account to see if that will help…..any ideas?