TAdvPageControl and/or TAdvOfficePager

I would like to be able to have the tabs on the left or right use horizontal text.

Text rotation is not possible in TAdvPageControl. You might have a look at TAdvOfficePager that supports this: http://www.tmssoftware.com/site/aop.asp 

Wow, this is perfect and it looks great.  Your components do more than I can keep track of ;)