This is a Lombard, and it will run OS X 10.3.9 just fine.
I do not know how it will handle Tiger (10.4), but I suspect it would be ok (you will need DVD optical drive to install Tiger, not sure if it has a DVD reader or just a CD).
The memory will be ok, but the HD may be small -- and it will be very slow and will limit the OS X. It's fortunately easy to update that HD on that machine, and 5400 rpm HDs are pretty cheap these days.
It will surf the internet, do email and wordprocessing, etc just fine. But iMovie and related apps will be painful.