To martin:

I really appreciate your suggestion thanks! I did go digging into it
but one problem I found out, it still has no support on image
insertion... :( but thanks, at least my focus is on lout and ps2pdf now
:)

To Dan:

"I am in the process of porting fpdf (http://fpdf.org) to Ruby. It will
support JPG first then PNG. It's working for simple stuff but has a
couple of bugs that I will work out in the next two weeks or so for
more
advanced features. "

after a whole day searching for an answer on "how to insert an image to
a pdf", i guess the answer is here again hehehe I guess i have to try
this out :)
thanks!

Artotoy