Accessories

I just moved to Maryland, just outside of DC. While everywhere I go I have great cell reception, I have hardly any reception in or around my new home. Apparently my new house sits down in a bit of a valley and I am surrounded by big ass old trees that are blocking my signal. I spoke with Verizon and they said I can get an external antenna and that should solve my problem. My question then becomes, which one is best and works best for the Treo 650? I would like to get a wireless mount so that I don't have to be stationary to the antenna.

Thanks,