Thanks again for the speedy reply.

In this particular case it's not 'an application' as such

I need to add files to a specific Photoshop subfolder but on 64bit systems there's likely 2 versions of Photoshop installed - the 32 and 64bit versions. My files are the same regardless of 32bit or 64bit - basically I need to copy the same files to 2 locations on 64bit systems but only one location on 32 bit.

John