EX-23.1 4 v076141_ex23-1.htm

Exhibit 23.1


CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this registration statement on Form SB-2/A of our report dated April 13, 2007, which appears on page F-2, for the year ended December 31, 2006, and to reference to our Firm under the caption "Experts" in the Registration Statement.


/s/ VIRCHOW, KRAUSE & COMPANY, LLP
 

Minneapolis, Minnesota
June 8, 2007