Postcard Link

I just installed version 1.5 and its working correctly. I would like to add a automatic link above each picture within an album that would then take me to another page to use that image in a postcard. In other words I would bring up the gallery, click on an album and then click on one of the thumb images to bring up the larger version of that image. Above it I would like to have the aforementioned link. What file would I need to modify to accomplish same. Thanks.

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Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful):
Gallery version:
Apache version:
PHP version (don't just say PHP 4, please):
Graphics Toolkit:
Operating system:
Web browser/version (if applicable):