Not quite sure what you are trying to do but remember the higher the better. Most people do a roof or chimney mount. You need to get the antenna above the roof line somehow. You can wall mount using special brackets or Channel Master do an eave mount, I am not quite sure what you mean by mounting in the ground.
You can get regular antenna mounting stuff (mast, brackets for chimney etc) at Lowes or Home Depot, Fry's or Radio Shack. Roof mount needs a tripod. Fry's stocked these last time I looked, Radio Shack may also. Or you could order one online with your antenna.
http://www.solidsignal.com/cat_display.asp?main_cat=03&CAT=Mounting Supplies
You can get regular antenna mounting stuff (mast, brackets for chimney etc) at Lowes or Home Depot, Fry's or Radio Shack. Roof mount needs a tripod. Fry's stocked these last time I looked, Radio Shack may also. Or you could order one online with your antenna.
http://www.solidsignal.com/cat_display.asp?main_cat=03&CAT=Mounting Supplies