I don't know about licensing and it's not all 100% bioinformatics but here are some materials on protein structure that have been useful to me. Kleywegt's fantastic course on validating models obtained by crystallography: http://xray.bmc.uu.se/gerard/embo2001/modval/index.html Gale Rhodes' page of goodies, including links to a variety of useful things. You have to request permission to reuse. http://www.usm.maine.edu/~rhodes/Goodies/Goodies.html#lis Birkbeck's Principles of Protein Structure using the Internet course has some great material http://www.cryst.bbk.ac.uk/PPS2/ Michael Sadowski. ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com