Open Question: What sharpener should I get?

I bought the Gerber ultimate survival knife from my friend. And he is stupid completely ruined the diamond steel that comes with it. So I wad wondering what is a good sharpener.......preferably one at walmart.

But since there is no grip on the sharpener
my house is made of (pink,red) sandstone and there are extra stones and I was wandering if I soak those would that be ok?

Source:
http://answers.yahoo.com/question/index?qid=20110419225942AAMtJOG

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