GDaddy,
A couple of questions :

1) Where is your BiaB folder located on your harddrive ?

2) If you go to that folder with Windows Explorer, do you see the gp5.dll ?
(I have a gp3.dll at 515 KB, a gp4.dll at 1220 KB and a gp5.dll at 1.220 KB in my BiaB 2011 folder)

3) Are you logged in as an administrator when you receive these error messages ?

4) Is it perhaps possible, that you have more than one BiaB installation folder ? (I.e. and incomplete/failed installation somewhere ?)

Just stray thoughts so far, but I'll be glad to help !

Ole