I'm pretty new to SCCM 2007 (SP2, R2), but I've searched Google and this forum without any results. I'm using the All Unknown Computers Collections for OSD with PXE and I get a window that warns of the dangers of doing this and waits for 180 seconds before proceeding. Does anyone know how to get rid of this. I have written a script to prevent any accidental reformatting of machines and just want to bypass this and speed things up. Thanks.

im assuming you mean the PXE response delay? you would go into site management in your configmgr console expand your site select your site server and then select the PXE Service Point role and change the PXE Response delay.