I've included ACROBAT READER 5.05 so if you do not have it you can Install it directly from the CD. Go to the Tsr_prog/Acrobat Reader 5.05 folder on this CD and copy the ar405eng.exe file to a temp folder on your C:\ drive, then click on the AR405eng.exe file to start the simple Install. Once Installed you can view the many .PDF files I've supplied with my TSR software for Tech info. Also a newer version is available on web. You can find it on Acrobat Reader site. This older version is supplied as it is compatible with older PC systems. www.TsrSoftware.com