SaveNow is a spyware program, a parasite that clings on to IE and opens pop-up ads. It describes itself as a "price comparison" utility, but all it does is open targeted pop-up ads whenever the user visits certain sites or enters certain terms into a search engine. It's been spotted bundled with the BearShare gnutella client, and the RadLight media player. Also known as WhenU, which is the name of the company distributing it and profiting through the ads. It can be removed easily enough with an anti-spyware program like Ad-Aware, or even just ctrl-alt-del'ing the process and manually deleting its directory in the Program Files folder.