speaker/amplifer volts, watts, ampere, impedance calculator

My family member has made one small software for my use.
With this u can calculate watts, volts, current, or impedance of speaker or amplifer power. U hv to fill any two parameters & rest two it will calculate.
Hope u will like it.

**broken link removed**

If you can measure only two of the parameters then why not measure the third?
Or simply calculate the third. The calculation is simple.

The impedance of a speaker is accurate at only a single frequency. The measurements must be made at that frequency to be accurate.

U r right audioguru. But many times this is required.
Anyway i welcome ur suggestions, Kindly be more specific with technical details for modifications to be included.
The person writing software is not familiar with audio technology.
All other creative suggestions r welcome.