I have put all the .NET string handling that seemed relevant and that was not already implemented in B4PPC in this library. I've also provided access to a .NET StringBuilder that efficiently concatenates large numbers of strings. Help and (sort of) demo app included. Should work on .NET 1.0 and 2.0 and desktop and device. If I have missed any string operation that anyone thinks might be useful then let me know. EDIT :- Source code for merging dlls posted. PLace in the Basic4ppp Desktop\Libraries folder.