about using Microsoft.PointOfService

burning_desire wrote:

using Microsoft.PointOfSale
but i am not getting it.
what will i have to do....

Based on this somewhat vague post, i believe you're putting a using statement in your code and it won't compile because you've not added a reference to the right dll. There is no Microsoft.PointOfSale in the standard .NET framework, so I assume it's something you need to download, then add a reference to.