>>>>>I have two computers connected to the same Linksys router. When I run IPCONFIG on one I see IP address 192.168.2.100, the other one is 192.168.2.101. In the My Computer -> System Properties both computers have the same name in Workgoup "MYCOMPANY". One computer is XP and another Win2000. How do I access shared drives from one computer (XP) on the other computer (Win2000)?
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>>>>Which machine contains the drives you want to share - the XP or the W2K?
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>>>W2k has the driver that I want to share; that it, have access to it from XP.
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>>Have you already created the share on the W2K machine?
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>Quick question, if I may. In one of the articles that Tracy suggested, they point to setting property of TCP/IP -->Advances -> WINS tab to Enable NetBIOS over TCP/IP. On my Win 2000 the currently selected option is Use NetBIOS setting from the DHCP server. Do you think this makes a difference? (this stuff is way over my head).

You do need to have NetBIOS over TCP/IP enabled. Probably, this is being set correctly from DHCP on your router. But, if you want to make absolutely certain you can enable it manually as described in the article.