Images virtuemart quickstart not showing

Installed the Joomla 2.5 Virtuemart version on mirajorna.nl but no images are shown. That's ok because I know I should change site url in administrator/components/com_virtuemart/virtuemart.cfg.php ; But this file does not exist. So how to set the site url for virtuemart in order to show of the images? Images all exist in the appropriate folders so changing the site url for virtuemart should be enough. How to do this? In which file?
Thanks.

Could you check whether the same happen on default Joomla! template like Beez ? VirtueMart as a 3rd party extension is beyond our support so if the same happen with Beez you probably need to contact with VM support.

This has nothing to do with template settings but with the quickstart. Turns out there are no images in quickstart package, only standard grey images. Should it be like this. Why are the virtuemart images all just blank images and no real examples?

Demo images are not included in quickstart package due to copyrights.

Thanks for answering, Would be nice to mention this somewhere because quickstart packages without Virtuemart contain images and it is confusing to see a website appear without images once it makes use of Virtuemart. A short note like "demo images not included" in download section would be enough. Thanks for answering though.

Thanks for your opinion, we consider adding this text but it is already described at our documentation page, please look >> http://www.gavick.com/documentation/joo ... uickstart/