Raffaz, you didn't read the post completely. It's greyed out.
Now, there's two options fir Internet explorer. The normal one, and the no addons one. If the link in the Start menu says IE, and there's no addons, try going into IE's folder and open iexplore. If that does, add the shortcut to the Start menu and delete the old one.
omg dude, i had this same problem, i just had to uninstall IE7 and reinstall it and it then it launched with add-ons. u can try doin that. hope it helps, if what ihuhser says doesnt work that is, which didnt work for me, no matter what i did, it always opened w/o add-ons. it was weird.