Thanks for your help! I did not know about kobesearch.cpan.org... I realized that I did not mention in my message that I wanted to use GD::Graph module, not only GD... I also continued to do some research on my own and I found the solution (or should a say a solution). Here it is: you type the following in cmd: ppm install http://theoryx5.uwinnipeg.ca/ppms/GD.ppd ppm install http://theoryx5.uwinnipeg.ca/ppms/GDTextUtil.ppd ppm install http://theoryx5.uwinnipeg.ca/ppms/GDGraph.ppd ppm install http://theoryx5.uwinnipeg.ca/ppms/GD-Graph3d.ppd ;)