A back up of clients is not the program you need the program on your new comp first.
try coping the data base onto the stick as a drag and drop (full copy from desktop) not backup data
then on the new comp open it up on stick then save as but the stick may not have the space to fit the whole program on
or connect the two comps together via network port create a home network then transfer data,
or buy a external cd drive and install the program via cd then update clients via backup data from stick
or see if there is a free trial on the internet of your program then just enter your user id and pass codes that you will have on the paperwork that came with the cd
hope this helps