Webuser Forums: IE7 palyin up after new motherboard install

Hi, I have just had a new board and power supply installed after my comp just stopped working.
I have D/L all security patches and updates for AVG, Zonealarm, Spywareblaster Etc and everything seems ok except for IE.

Whenever I launch my home page (myhomepagepal) it loads as normal but when Clicking on any link it opens up to 15 different windows and I get 3 or 4 error command boxes with the dreaded red Cross reading...( windows cannot find "null" Make sure you typed the name correctly and try again to search for a file click the start button then click search again)

The windows also open at a different size and I have tried resizing and closing but to no avail.

I do have firefox( hence the post ) but all my bookmarks are on IE any help would be appreciated
Thanx