From the web......
Nuesearch is a browser hijacker that is bundled with other free software that you download off of the Internet. When installed this browser hijacker it will set the homepage and search engine for your web browser to http://www.nuesearch.com.
This itself is not considered malicious as there are many legitimate programs that change these settings as well. What is considered malicious, though, is that it will also append the argument http://www.nuesearch.com to random Windows shortcuts on your desktop and your Windows Start Menu.
You really don't want or need nuesearch....suggest you post the results of all scans by following boopme's instructions.
“Every atom in your body came from a star that exploded and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics...you are all stardust.”― Lawrence M. Krauss
A 1792 U.S. penny, designed in part by Thomas Jefferson and George Washington, reads “Liberty Parent of Science & Industry.”