I would highly recommend that everyone stay away from these "universal fix-it-all" types of software.
They'll cause nothing but problems in the long run. Contrary to what brkkab123 states, the internet tweakers these programs have are terrible! If you really want to tweak your internet connection, the two websites I would recommend would be
www.speedguide.net and
www.dslreports.com
Both sites have tools to test the connections and ping times, etc. SpeedGuide has the best tweak suggestions for Firefox and Windows 7 tweaks. DSLReports has the most accurate RWIN tester and such. Now this is just my humble opinion regarding these two sites, but most of the suggested tweaks and settings have never really failed me and the tweak did improve the connection.
AGAIN - STAY AWAY FROM THIS JUNK SOFTWARE!! IT DOES NOT WORK!!