I would suggest you go to the manufacturers website and check there. Most manufacturers such as HP and Epson have a support section where you can download the printer drivers and software for your printer.
It may be in the format of a "zip" file which if you have Windows XP or Vista you should be able to extract the files. If you have an older version of Windows you will need to download an extraction program such as Winzip on 7Zip.
Good luck