I dont know how much interest is out there in TWC land for this, but April 2010 will be a spanish worhsip/evangelistic conference at Saddle Back Church. Lake Forest CA. Will be April 20 & 21.
Details will be slowly posted at www.CHBDC.org

I attended the one last year in Fresno, CA. It went good--lots of good music and teaching. These only come 1 a year. But have been growing in participation and attendance.