Thank you for the quick reply. I feel a little foolish.
Accessing the Advanced Boot Options in Windows 7 is slightly different than what I was used to in XP. On my old machine all I had to do was click F8 once and the ABO menu would eventually appear. The secret to accessing ABO with Win 7 (at least on my new machine) is to continue clicking F8 until the clicking produces a beeping sound. Each beep seems to equal about one second that the mysterious black screen will remain visible. When that black screen disappears the ABO menu appears.
I also found out through trial and error (mostly error) that clicking the F5 key during startup also allows access to the ABO as well as a couple of other options.
Thanks for all the great info on this site!