Is there a 64 bit version of this software?
No, there is no 64bit version of this software. I have tried to download and use the available version, but there isn't one. There is a trick to make it work. Use the link below to download and install DosBOX. DosBOX allows you to run old DOS applications.
In DosBOX, type mount C: PATH-WHERE-BUSYLITE-IS-EXTRACTED then type C: and press Enter. Start the installation typing install.exe.
mount C: PATH-WHERE-BUSYLITE-IS-EXTRACTED