remove oursurfing folder

Follow the instructions given in the link below. When you have done that, make it a *PRIORITY* to download and install an up-to-date Antivirus program! There are several very good free ones. AVG, Avast and Panda are all good, though you have to be careful to select the free versions and be sure to UNcheck any options which offer to install default search engines or other 'helpful' things which you may not want.