Images From Vendor Not SysPrepped (Is This A Problem for Agent?)

Hello,

We have about 200 machines that were imaged and setup by an outside vendor. We discovered that these machines were not SysPrepped. People are currently using them and would be a disaster to have to recall them all to do a new image.

We are planning push the Altiris agent to all 200 machines. Could this present a problem with duplicate GUIDs and give us a problem managing the machines?

We are running SMP 7.1 SP2

Thanks for any guidance.