I'd suggest you do a search of past posts on containing the words "Aricept" and "hallucinations." This has certainly come up before.
You might glance through the first couple of pages of posts in the "Symptoms/Diagnosis" subforum. And probably "Treatment Options" is another good place to look. You might consider making your post there as it may get more visibility than in the "Introductions" area.
Be sure to read the Boeve "Continuum" paper yourself, and provide it to the MD. It details a treatment program for those with LBD. You can find it here:
http://www.lbda.org/index.cfm?fuseactio ... nload=1650
In short, there are three dementia meds that are supposed to do something for hallucinations. If Aricept isn't working, I'd suggest you speak w/the MD about trying the Exelon patch. Then/or consider adding Namenda to the mix.