CompuServe Messages

I have a few questions: 1.) When selecting .TGA as the output file type, there is a button to select "compressed." Is this a "lossy" compression? (I realize the .JPG file type is/can be lossy, depending on the compression setting.) 2.) When storing or transferring files, is there any loss of info/quality if you zip/unzip them, or use some other compression method such as Microsoft Backup? I will be aquiring some (100's to 1,000s) high quality images from a client at their site. I plan to bring my portable re-writeable 238MB optical drive (and extra disks!) to aquire the images for transfer to video, as well as to archive the images. Should my client (3DS user) save them as compressed or uncompressed .TGA's? Thanks in advance, Paul D. Sanford [LEVEL 5]