Bit & Bytes Confusion / Troubles

Well, I'm about to pull my hair out on this. So I figured I'd post for help before I cause some premature baldness. I'm fairly new to C# and have run into this problem trying to get info out of a int byte that I get returned. Here is what is stated in the lib that I'm working with. The first three bits represent a single value, not flags. For example Auction (0x05) is not a combination of OwnedByOther (0x01) and ForSale(0x04). However, the BorderWest and BorderSouth values are bit flags that get attached to the value stored in the first three bits. Bits four, five, and six are unused public enum OverlayType : byte { Public = 0, OwnedByOther = 1, OwnedByGroup = 2, OwnedBySelf = 3, ForSale = 4, Auction = 5, BorderWest = 64, BorderSouth = 128 }