I know I have to use set_time_limit() to set the time
limit of a particular script.

Can I use this function anywhere in a PHP Script?

Does it only effect the Script I use it in or does it
effect all the scripts running at the time?

It's just that I have a database loading script which
runs for a couple of hours and need to set the timelimit
to zero for it.

Does anyone forsee any problems with this???

Help, and help quick if you can, I'm on a deadline.