Hi Andrev,
Many many packers/protectors are available but most of them are not compitible with vfp.
You can try Armadillo (http://siliconrealms.com)or Pc Guard (www.sofpro.com).
Konxise only compresses the exe files while Armadillo & Pc Guard Compress+Protect the apps. Apps protected by all these 3 ones can not be decompiled by Refox or such progs, but be aware of other unpackers which are intended to Armadillo/Pc Guard/Packers. In comparision at point of cost, Konxise wins the rest of two.

Enjoy!
Satya