I think I have got it. The results look correct, but I have a ton of items and want to make sure. Does what I have below look to be correct for the query?
select si.workstationname"workstation", ni.ipaddress"ipaddress" from systeminfo si left join networkinfo ni on si.workstationid=ni.workstationid where si.workstationid not in (select si.workstationid from softwareinfo swi left join softwarelist sl on swi.softwareid=sl.softwareid left join systeminfo si on swi.workstationid=si.workstationid where sl.softwarename='tellerreceipt')
One thing I would like to add, but couldn't find a way to do it, is to exclude servers. What would need added to do that?