BTW, sorry, misread. Didnt realise it was 500 odd, oh dear. You need RIS. Get it get it NOW. Clean ris image, imaged deployed site wide, virus gone! :-)
Hi, Have you heard of RIS? (Remote Installation Services). It is well worth looking into, especially if you are to reinstall over 200 machines with an OS, not to mention the required software and device drivers per computer, eek! :-(
Just perfect an OS image, with all your software/drivers etc, and deploy the image to clients. It uses PXE LAN boot and TFTP. The only user intervention to installing your image is getting and administrator to log on on each machine at network startup, select an image and your away. You will save hundreds of hours recovering from bloody rinbot (and anything else).
We have it here in derbyshire. If you need any help, tips etc yada yada, email me if you want. [email protected]