any one know a way?

Like the spell? Umm... maybe the court wizard in Whiterun.

I really am confused by your question....

sorry i ment the hourse

House? I don't know of a house "Frost".

Houses available to player:

Breezehome in Whiterun
Honeyside in Riften
Vlindrel Hall in Markarth
Hjerim in Windhelm
Proudspire in Solitude

And the Archmage's Quarters in Winterhold. And something specific to the Thieves' Guild and the Dark Brotherhood, but I don't really know what they are?

Oh wait. You meant the horse.... ? I don't know. I really dislike the horses in TES games so I never bother with them. The http://uesp.net/wiki/skyrim:Skyrim probably can tell you.

Get the quest from some guy in the bee and barb in riften.

beware because after you complete the quest louis letrush will stalk you

Hahah this is such a misleading post. It could mean horse or house haha. Idk why but I got a kick outta this one.

Yeah, you go into the Black Briar manor, kill everyone, take the papers, and ride away on the dreadful beast. Then beat Louis Letrush to death.