www.chemicaldetectives.comThis program is a database of spectrums. There are over 100 unknowns in the database, each compound has an IR spectrum, mass spectrum, proton (high res and low res) NMR spectrum, carbon-13 NMR spectrum as well as %composition (microanalysis). Use these data to work out molecular structure.
Excellent practice, recommended for all chemistry students. More details for downloading on the website [updated as of earlier this month].
Download links:
http://www.chemicaldetectives.com/Download_Software.html - download the chemical detectives workshops
http://joule.ni.com/nidu/cds/view/p/id/1101/lang/en - download the LabView software to run the workshops, requires registration. If you *really* don't want to register or can't figure out how, PM me and I'll let you use my passwords, but you better convince me you've tried and can't do it.
Courtesy of A/Prof Richard Morrison (retired, previously at Monash University)
Note: This program is also useful for first year chemistry, however, VCE students should try not to get carried away with all the unknowns on there, the majority are BEYOND the level of VCE. Don't stress if some crazy molecule trips you out, extra brownie points if you can do them all

Have fun =]