Keep track of uptime through shutdown?

[Nightfall]

I can't seem to find a simple little app that will keep a total for the uptime that my comp is on. Not just the current uptime, but the total time the comp has been on forever (well, since installing the program anyway).

Anyone have a suggestion? Thanks!

 

[vinnie]

Time reboot, multiply that by number of reboots, subtract that from time since install and there you go.