InDesign CS Acrobat, and grainy type?

[solcjoye]

Using InDesign CS on a PC, exporting a file to PDF (Uhm, Im using acrobat ver 5.0) so Ive getting ready to have some business cards printed up, and on part of it ive got a script type font. I wanted it to look a bit thicker than the normal font so I added a .1 stroke to the font, looks great in InDesign, but when I open the pdf the script font with the stroke looks grainy now? Is there a better way to do this, or what?

When the stroke is added does it change the font from a vector type image (Is a font even considered a vector? It behaves like one, but not sure if that is correct terminology), to a rasterized image or something? Whats up?

Thx.

-S.