My name in not Reg,
I am mindnoise,
so
the 7.1.1 installer does not need any previous PT version installed.
Uninstall any Version prior to using 7.1.1.
Are you sure you got the 7.1.1 installer (the 125MB one) NOT the 7.1.1cs2 installer (39MB)
the last one is just a bugfix.
The 7.1.1 installer is towards the bottom of the page.
7.3.1 will also come as a standalone installer (like 7.1.1) with no need for a 7.0 installation cd.
There is no way to get a 7.0 version running on a MacBook Pro.
you also should check this:
http://duc.digidesign.com/showflat.p...part=1#1153458
and this
http://duc.digidesign.com/showflat.p...fpart=1#313423
and this:
http://duc.digidesign.com/showflat.p...fpart=1#969004
...they are all stickies on the LE Forum.
I also suggest to get to know your way through the digidesign homepage, you will go there often looking for information.
regards,