VBA print pdf files

[fmalouda25]

Hey

I was wondering if someone could help.
I have an application in Excel that selects pdf files from a combo dropdown box. When clicked it will print off this pdf files.

This works fine but i do however keeps getting this annoying message: Acrobat Reader This files may contain newer information than this viewer can support....

This is with Acrobat Reader 5.0 and i HAVE to have this version installed.

I tried the following but the message still appears

Call ShellExecute(0, vbNullString, strURL, vbNullString, vbNullString, 0) 'Change 0 to vbNormalFocus to view.
    'Application.Wait (Now + TimeValue("0:00:02"))
    Application.SendKeys "{ENTER}"
    PrintURL = ShellExecute(0, "print", strURL, vbNullString, vbNullString, vbHide) 'Change 0 to vbNormalFocus to view.