re: Some Help With Lamb

one leg of lamb- wash with water and dry
rub with olive oil
season with salt, pepper, rosemary leaves, garlic, and dried yellow mustard but you don't really need the mustard.
put in pan with about 2 to 3 cups of good red wine
cook at 350 degrees until the fat begins to turn brown and you reach the internal temperature that you like. I'd pour more wine over the lamb a couple of times while in the oven.

I'd recommend pulling it out when it hits 140 degrees, that way it should be a perfect medium rare after resting for about 10 min.