PDF to Photoshop

Hello- I'm new to this form!

Would someone please describe how to eliminate the fuzziness in Bitmap files when I edit them with photoshop?

Whenever I take the Bitmap file and manipulate it, there is an extreme amount of pixilation.

I want this to be print quality, and don't want to spend hours trying to fix the pictures up.

Also, the same downgrade happens when I try to open a PDF in photoshp (I have the newest Creative Suites 2)

Does anyone have any ideas or filters to use?

- work with a higher quality photo. when i work with a heavily pixelated photo (after enlargement), i sometimes use the surface blur tool found in the filter>blur tab which will greatly eliminate roughness. you will lose a slight amount of reality however, but i find that to be the better alternative as compared to the dreaded pixelization.