Link to file if exist

Hi,

I am trying to create macro in excel 2007.
I have excel document in folder together with other files (.pdf, .doc, .xls.....) in excel document I have column (i2,i3,i4...) inside that column I have exact file name (documentName.pdf, documentName.doc....). I need macro that would search for that particular file (if exist) in the same folder and add a link to that file. Something like: i2=documentName.pdf - if that file exist add hyperlink to k2 "link to file" (or "no file on disk" if file doesn't exist), and continue loop trough all "i" columns.

Thanks so much for help.