printing list of linked receipts - to single PDF - HOWTO?

[Lexje]

Hi,
Each month I download a csv overview of creditcard expenditures and save it as an xls file.
On each line I add the word "link" in column K.
I then add a link to the receipt. I am on a mac. [The linked receipts are stored in a Devonthink database, the links open the relevant document allright]

Now I would like to automate the printing (or collecting if you want) of all these linked files to a single PDF file.
I'd be glad for any pointer on how to get started with this?

Thanks!