Chances are you would greatly annoy the IT people by putting something like that onto a work system. So the next time you had a problem, they'd probably put you below all other tasks, getting to you when they're damn good and ready.
The setup is there for a reason, and it doesn't involve you deciding you can't be bothered to spend 5-6 seconds typing in your password. If you're away from your desk so much that it's a problem, then it seems as if you have other issues to deal with.
my company is using a automatic screen saver lock so nobody could use you computer for security purposes,hmm. Question: is there any user programs out there i could use to keep my screen active instead of having to punch my password in all the time?