As already mentioned above when using 3rd-Party Packages it is recommended to do some formals checks before executing the conversion from Legacy to windows. Regarding to this point we can have ~3 tracks
Package is available for windows
Package can be made available for windows (conversion, worked by the author)
Package can be replaced by alternates e.g. alternate packages, workarounds, code statements.
To get some more guidance feel free to checkout our InfoSet resource related to Leagcy to Windows migrations