Steve DeMarchi had some USA acoustic concerts listed on his MySpace page for their upcoming November/December mini-USA tour. 

29 November - BOSTON - WXRV - Charity-Fundraiser Show
30 November - DES MOINES IA. - KPTL - Charity Xmas Show
02 December - NASHVILLE TN. - WRLT - Sunday Night Concert Series
03 December - CHARLOTTESVILLE VIRGINIA - WCNR - Free Show
07 December - McALLEN TEXAS - KHKZ - Xmas Show
08 December - EL PASO TEXAS - KSII - Xmas Show
12 December - BOULDER CO. - KBCO - Radio Show
14 December - PHOENIX AZ. - KMXP - Xmas Show
15 December - PALM SPRINGS CA. - KPSI - Xmas Show
16 December - BAKERSFIELD CA. - KLLY - Lounge

They got through a little more than half, but as of yesterday, December 12, Dolores has canceled the remaining ones as a result of having the flu (via email sent from Steve DeMarchi to one of zombieguiders' members).

Source: http://www.zombieguiders.com/viewtopic.php?f=9&t=202&start=0