Sorry to hear you are feeling so blue today. Don't give up.
There has been a recent discussion about skin mets at
http://www.ibcsupport.org with links to information about treatment options and information about various creams for skin mets. You do have options besides Taxotere. Hang in there and keep putting one foot in front of the other. Also if it were up to me I would not stop Herceptin. Has your doctor suggestedTykerb or other kinds of chemo? It might be time to get a second opinion.