one... but then you need the windows ports which include ME XP 95 98 3.1 3.11 for workgroups etc, the linux ports [insert list of linux oriented os's here...], the java version, the C# version, the basic version [any from GW to visual...]... not to mention that every other programmer for each port would say that they could do it better / faster / more efficient...

yeah yeah, you've all heard this joke in some form or the other some other time... but anyway...