EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report included in this Form 10-K/A into the Company's previously filed Registration Statements File No.'s 333-29485, 333-57163, 333-92149, 333-95487, 333-90353, 033-28483, 333-49796, 333-54784 and 333-54786. /s/ Arthur Andersen LLP - --------------------------- Orange County, California June 5, 2002