Internet Explorer Not Opening. (WXP-Home)

[nice_one]

I have a sudden problem with Internet Explorer not opening up. Upon launch, IE never opens. XP generates an error message, asking whether to send an error report to Microsoft. No explorer window of any sort will open. This problem seems to have come out of nowhere. No new software has been installed as of late. Any ideas or help would be most appreciated.

I am currently running Windows XP Home on a Dell Dimension 2350.