The most challenging aspect to this hike may not be the hike itself but getting to the trailhead. Access roads leading to the T-head in Millard Canyon go through the Morongo Indian Reservation which is now closed to the public with gates and guards.
Permission from the Morongo Indian Tribal Council must be obtained to get a pass through the reservation which is the only access to the peak.
If you are a little savvy and sincere enough permission may be granted as was the case for Diana in the top report in trail reviews from 11/9/10 also in the link in getting there below.
All this aside once you get to the flat open summit the views are pretty spectacular. 15 miles south the jaw dropping scarp of the San Jacinto Mountains rise abruptly 10,000' out of the surrounding plain like a massive rugged phoenix. 8 miles to the northwest over ridges and peaks looms Old Greyback (San Gorgonio Mtn.) The view southeast takes in The Little San Bernardino Mtns. and Joshua Tree along with a straight shot down Coachella Valley to the Salton Sea. To the southwest the Santa Ana Mtns topped by Santiago Peak rise in the distance 45 miles away.
So if you're up for a little diplomacy and some bushwhackin' put pen to paper and write them a letter requesting permission.
This may be that one peak missing from your San Bernardino bag of summits.
I've added a link to another sight with personal reviews that give a first hand account of directions and access to the peak in this link
Morongo Tribal Council
12700 Pumarra Road
Banning, Ca. 92220
Call the Mill Creek Ranger Station to inquire about a possible permit for this hike. 909-382-2882
For camping near the trailhead in the east branch of Millard Canyon beyond the boundaries of the reservation contact the Mill Creek Ranger Staion: 909-382-2882