System policies are fine to fiddle with (IMO).  Changing the key is equivalent to editing it through the Group Policy Editor (gpedit).  Just make sure you don't edit it to be more restrictive :P

Games like a Grrl Wrote:if its gonna blow a hole in the earth

I'd keep watching if I were you.  If it doesn't, something will.

Games like a Grrl Wrote:Did I just tell mah computer to divide by zero?

Unfortunately, computers can divide by zero - they just don't give you a result...