Here are some links to other sites from around the world which may help you.
Twin Loss NZ
www.twinloss.org.nz
Surviving Twins
www.upnaway.com/~junem/index.html
Twinless Twins International
www.twinlesstwins.org
Murraylands Twin Loss
www.murraylandstwinloss.org.au/
Multinet Multiple Birth Association
www.multinetmba.org
OzMOST (Aussie Mums of Surviving Twins/Triplets/Quads) OzMOST-owner@yahoogroups.com