No need for anyone to respond. I kept testing out my problem and discovered there wsa no glicth. I happened to have teh "printer manages colors" selected instead of Photoshop manages colors" ONce I switched to Photoshop manages colors, I could then access "Page Setup" window.
How has your printing been going up till now with the 3800?
The question still stands, but I made a small error thinking that you were also referring to 10.7.