A couple of months ago I found a whitesheet on the ACCPAC ERP site that detailed the programming language and architechure 5.5A and 5.6A are written in and also what the new 6.0 is being written in .NET I think for 6.
Does anyone have specific info or a link as I need to hire a programmer with the correct skillsets to do some customization within our ERP 500 software,