tools dropdown menu

Hi - my kids have been playing on the internet & now I have two links on the drop down tools menu which I have to delete as they direct you to unsuitable sites. Can anyone help me & explain how to delete these two items?

 

Welcome to WindowsBBS!

First, download Spybot and Ad-aware and install. Links are in my signature. Open and immediately update, then run, one at a time and delete all they find. If you still have the entries, download HijackThis from here in the zip form. Unzip to a permanent folder and open the program. Click the scan button then save log. It will open in notepad once saved. Click edit>select all>edit again>copy, then paste it back here. Don't fix anything with it yet! Someone experienced with the logs will tell you what/how to fix.