do i need a new installation disk????

i just recently got my stuff back out and i of course had to apply for a new license on my new dongle. when i originally bought cubase i bought the studio 5 then shortly thereafter upgraded within the software to the full version. would steinberg have sent me new installation disks? i can only find the cubase studio 5 install disk. do i need the full version disk. i checked my license is definetly for the full version is there anywhere i can download cubase 5.exe or somewhere i can re-upgrade within the software i have? or am i going to have to have a whole nother disk