I bought the student edition of Adobe CS4 in 2008, but I recently got a new computer. Is there a way I can upgrade or transfer the program I already have onto my new computer since I've already bought it once?
Simply deactivate it on your old machine and install it on your new one. If you want to upgrade to CS6 from a S&T version, all upgrades must be bought directly from the Adobe store due to sorting out the serial numbers. Otherwise it's identical to the normal comercial upgrade path.