Internet program wont open

Hello I have a vio Sony laptop and I've had several virus problems before .And I'm afraid that some of those virus had a great affect on my programs that it has affected my internet explorer program...my internet status says that I am in fact connected to the internet however whenever I try to open the internet explorer program a window pops out and says -do you want to allow the following program to make changes to your computer and gives the options yes or no however whichever option I choose it simple pops out the window for only a few seconds and then closes the window is see thru with just the outline around it....how can fix this promblem