How can I resize OS X 10.7 Lion display screen resolution during install?
Ran into the same issue.  Followed YouTube video of installation in order to figure out the following:

Once the disc is booted, select Reinstall OS X.  You will then reach the screen where you cannot see the Continue button.  Using your keyboard, press TAB followed by SPACE.  You should then reach the User Agreement screen.  Press TAB, TAB, TAB and SPACE.  Click the Agree button which should be visible.  Click the installation drive and press TAB, TAB and SPACE.

This should get you to the point where Lion is installing.