Report with variable for Table name

so I know a little sql - enough to get some things done... with that I have used variables in the where statement....

but what I am looking to do is see if I can use 1 report to have a drop down list for the table name.

We archive computers out and sofware delivery records out. I would like to have 1 report called Altiris NS6 and NS7 Archived Records. You would simply select NS6 systems or NS6 SWD or either for NS7.x.

With this the report would show the records for either table...

thoughts?