We also prefer "net use" commands for the simple mappings. When we we need something more advanced - vbs scripts. I would suggest to look through Markdmac's Login Scripts:
http://www.tek-tips.com/faqs.cfm?fid=5798
For example, you can try to take a look it this scripts:
http://techtasks.com/code/viewbookcode/368
http://techtasks.com/code/viewbookcode/562
http://www.activexperts.com/activmonitor/windowsmanagement/adminscripts/taskscheduling/