If you had another browser installed you could decide if the fault was in I.E. or somewhere else.
If you have a cover disc from which you have installed I.E. again then it probably also has Netscape, Opera and Mozilla on the disc. I have both
I.E.6 and Mozilla installed but tend to use the Mozilla browser more than I.E. because the latter gives me problems - like yours in fact. All these free browsers can be downloaded from this PCA website. Just look along the line for "downloads"