Hi,
Have you seen these two threads about skin mets? There are alot links and some information about skin mets and suggestions on how to treat them between the two links below. In fact one of the on going clinical trials for skin mets is located at the Washington Tumor Group in your state. You or your doctor might want to give them a call. The information is in one of the links below.
The two conventional creams used for breast cancer skin mets are Aldara (Immiquimod) and 5 Fu cream (which is Xeloda in cream form).
http://her2support.org/vbulletin/showthread.php?t=45308
http://her2support.org/vbulletin/showthread.php?t=47383