Thanks for the comments!
They are VERY simple conversions ( my modelling skills are pretty poor!)
The poses have been changed with some gentle bending to make them look like they are stumbling/shambling rather than walking. The girl on the right has had her head twisted at an extreme angle. I generally gouge out bit of "flesh" with a sharp knife, in-fill with greenstuff and cut into it for injured areas. Although you can't see it very well, the lady in the center has had her face re-worked with a scalpel to give her a more "skeletal" appearance and her foot has been twisted to face the wrong way ( Ouch!)
The rest is paint ( you can never have too much blood!).
The building is from the "Twilight Street" heroic scales set from Microtactix. it's a nice set and goes well with WorldWorks card buildings.
http://www.microtactix.com/Regards
PM