wheels4

Hi there, I am a bit of a newby, have patience please. I recently uninstalled some programmes on XP. I used the install/uninstall tool. Now when i go to sites that open a window for say logging in purposes nothing happens. Just an empty window. Same with happens with links. I have been told that the dll file has gone a missing. Anyone tell me how to overcome this problem. Any help would be greatly appreciated. Thanx in advance. wheels