I have made a substantial revision to my modification of the Schaefer 1993 Qbasic program for model sky brightness in mpsas at the lunar limb during the LCROSS impact. The revised Qbasic program is available at: http://members.csolutions.net/fisherka/astronote/observed/LCROSS/occvis_slcu... http://tinyurl.com/l38vj9 An instruction sheet and parameter entry tips are at: http://members.csolutions.net/fisherka/astronote/observed/LCROSS/SchaeferOcc... http://tinyurl.com/mrasdn The correction fixes computation errors and the model now responds to light pollution inputs. Modeling analysis using the modified Qbasic program indicates that just on the bright side of lunar polar termination and just above the polar limb, sky brightness will be about 14.7 MPSAS. This is a favorable contrast with the LCROSS team's single frequency brightness of the ejecta curtain at 3.0 mpsas. Based on this modeling, lunar glare should not prevent observing or imaging the LCROSS impact. But this is a model, not real data. Confirmation of the level of lunar glare above the south lunar pole by imaging-based differential photometry on Sept. 9 is recommended. Modeling indicates that light pollution in an urban environment may be a factor reducing one's ability to see the ejecta curtain. It is recommended that observer travel to rural or dark sky sites to observe the impact. Corrections and criticisms on the modified model are welcomed. Clear Skies - Kurt