Linq transform field

Hi:

I have a field in a products table that I am trying to transform when it is in a list from "MyPic" to "/Content/Image/MyPic_small.png"

The Model is:

public class Product
    {
        public int ProductId { get; set; }
        public int GenreId { get; set; }
        public string Title { get; set; }
       public string PicUrl { get; set; }
        public virtual Genre Genre { get; set; }
    }

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The current Linq expression is:

var genreModel = storeDB.Genres.Include("Products")
.Single(g => g.Name == genre);

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My Pic is found in the field PicUrl.  Any help in figuring out how to do this in the Linq expression greatly appreciated.

RBS