http://www.clir.org/pubs/reports/pub54/2what_wrong.html
http://www.calband.berkeley.edu/calband/cbaa/archiving/
S-VHS cassettes are different from VHS cassettes. You have to drill/melt a hole in a VHS cassette to be able to record in S-VHS mode (that you probably won't get S-VHS quality is another issue).
http://www.afterdawn.com/glossary/terms/svhs.cfm
http://kasoft.freeyellow.com/Central/Audio...Press/SVHS.html
http://homepage.ntlworld.com/hembrow/oldpage/svhs/
http://aroundcny.com/technofile/texts/cheapersvhs90.html