can you be more specific? (Score 1)

Your question is too general. You do not need to install anything if your needs are limited to aligment of few DNA/protein fragments once a week. The web resources will be good enough for that. For any lab doing sequencing I highly recommend Staden The gap4 program, which is a part of a package is a category leader. You may also take a look at Sanger Centre web site: Software. Almost all what you may ever need is there. ;-)