We run SETI 24/7 and it seems to be the culprit in my PC hanging up when I use the SQL applications. Is there any adjustment I can make to keep SETI from using too much resources.

Open your task manager (Right click the taskbar and select task manager)
Click the Processes tab
Right click on the Seti process, and set it's priority to low.

If that doesnt help, then I'd say kill the process until your done working.