>Which .dll files needs for program runing under vfp5.0?

that depends on the features your program is using...

to get a basic VFP executable running on a client machine without VFP 5 installed place vfp5enu.dll and vfp500.dll in the windows/system directory

The best thing to do is use the set up wizard (/tools/wizards/setup) and observe how it changes a computer system after the setup wizard is used...