here is the program link with google translator
http://translate.googleusercontent.c...hFEPVgwfqYqHww
The program is in russian.
It have two function, convert data file (.act/.qst/etc.) or hex code(for example, in items.txt you can find a line ondlg=02000000000000000100000001000000020000000C00 0000424547494E5F4449414C4F470200000005000000030000 000100000075A38E3201010000007306000000736E61705F32
02000000000000000100000001000000020000000C00000042 4547494E5F4449414C4F470200000005000000030000000100 000075A38E3201010000007306000000736E61705F32 is the hex code, in fact it can convert into an action.) to txt format.
Another function is just the reverse.
P.S. If you are interested in modding lua, you can even find the library in russian forum too.