EX-23.1 5 dex231.txt CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS Exhibit 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS ----------------------------------------- As independent public accountants, we hereby consent to the use of our report (and to all references to our firm) included in or made a part of this registration statement. /s/ Hein + Associates LLP Denver, Colorado April 10, 2002 E-11