Very nice site!
I've posted this already in another thread but here's a link to our site it you want more ideas. It might be easier for alumnae chapters since they have more stability in membership than the collegians do (due to graduation).
We are actually going to be redesigning our site but this one won the Excellence in Website Development award at our convention last summer.
http://gammaphibeta.pugetsoundalumnae.home.att.net/