Penman61 wrote:
I was planning on doing the latter in any case, but is there any reason
not to load that software again myself before I sell it?
Because you would have to go through the first-time setup again, forcing you to enter personal info and create an account with a password. Preferences files would start to be created, your network information may be recorder, etc. By the time you have finished doing a favor, the system is no longer factory-new and will contain a number of references to your local environment/network, intended or not.
It's better to erase the hard drive and run the MacBook Pro OS X install disc, then stop and let the new owner go through the startup, registration, and setup process for themselves. I would highly recommend that you instruct the new owner that the first thing they should do is fill out the setup screens for themselves, run Software Update, then keep running Software Update until no more new versions turn up (because some updates aren't visible until earlier versions have been installed).
Also, if you run the MacBook Pro installation discs that came with it rather than a generic OS X installation, it should install iLife apps as part of the process. OS X retail does not include iLife apps.