search on the net for the process you have mentioned came up with Compaq name next to then and as none essentials services
cpqdfwag.exe is process associated with the Compaq diagnostics utility. It runs automatically on system boot up. This is a non-essential process. Disabling or enabling it is down to user preference.
webdmi.exe is a process belonging to Compaq DMI Web Management Service. This program is a non-essential process, but should not be terminated unless suspected to be causing problems.
lcrms.exe - Company :, Compaq Computer Corporation. Description :, Insight Manager LC Remote Management
Now since you use this machine as a print server you might want to go through the processes list on your task manager and disable all the unnecessary ones via services menu.
I would also check which programs automatically starts via the startup window and disable all the ones that you don't need running.
The last thing I can think off is too check your print settings you might as well increase the space for th spooler folder and get the print jobs to first be spooled and printed after the it has been spooled completely as this will use less memory then printing them directly although it will dicreese the print speed