[link|http://www.fship.com/|Flagship]. If you don't, well, it's probably only going to keep getting worse trying to support such old code.
I know nothing about it, but it was [link|http://groups-beta.google.com/group/comp.lang.clipper/browse_thread/thread/aee9d4a13065dba4/f0d9de1330acf3a6?q=DOSemu+clipper&rnum=3#f0d9de1330acf3a6|reported] in 2000 to be 100 times faster than Clipper and compatible with Clipper '87 to 5.2x (5.3 now).
Luck!
Cheers,
Scott.