Little Question Mark folder before OSX boots...

Reset

Shut it off,
Turn on the power, when you hear the chime, hold down command (apple key) option P and R till you hear two more boot chimes

that will take care of that little problem

I'm not sure of the solution above but what I see the problem is that the Mac is trying to do a network boot. In OS X go to System Preferences: Start Up Disk and then select a local drive to boot off.

Edit: Come to think of it zapping the p-ram will probably reset the start-up disk, so your mac may still look for a valid disk on start up, so be sure to check the Start Up Disk preferences.

A flashing question mark usually means that the computer cannot find a startup folder, this may have changed with Panther on computers which do not have OS 9. Sometimes some computers show this every time, however if your computer gets stuck on a flashing question mark this is bad, either your system is dying or your HD is going.

The PRAM is confused on what the startup volume should be when it goes past POST. It goes thru a series of checking IO and then picks the HD.

It's not a failure of a hard drive or anything like that. It's fine. Simply reseting the PRAM or selecting the startup drive in the system preferences should fix it.

Hope this helps you out.