Help - Widget on summary page main section created problem

Hi,

I own the Pharmaceutical Discussion Group on collectiveX http://phdig.collectivex.com

With the intention of making the groupsite attractive to the members, I was experimenting with widgets & even successfully created a PhDig Chat on the side bar - I really loved the concept and then....

...I got ambitious, tried to get some fun into the groupsite by inserting a Cartoon widget, editing the "welcome message" - THIS resulted in a disaster - Now I have a cartoon widget below my welcome message & nothing else on the summary page! - I can't even see the edit button/ link anywhere to attempt any kind of repair.

I desperately want this rectified asap - lest my members think that the groupsite isn't serious any more & take it easy!

Help!!