C commandline application to more Windows Gui Conversion

Could someone help me with this. I want to port this (http://www.tuxgraphics.org/electronics/200509/article389.shtml)
software for i2c communication which works under commandline to a more visual windows gui. But I don't know how and in which programming language.

It must be a i2c communication program to control an digital powersupply. With buttons to control the voltage and current and store the settings. The microcontroller needs these commands:

I=10[null] sets 100 milliamps
I[null] read current
U=1230[null] sets 12.3 volt
U[null] read voltage
S[null] write the settings to EEPROM
all strings are null terminated

These are the original commands for the commandline program could anyone port this to vb.net or something like that to make a GUI?? Or has anyone some tips for me?

Thanks in advance,

Nico van Leeuwen
The Netherlands

In attachment is also the c code and the app

Maybe you can try programming this in labview?

Where can I get Labview? I don't have that prog. Does anyone has a free download?

That is not a freeware program (check https://www.ni.com/labview)

I think you can order an evaluation version (that is working 1 month; this time will be enough to make your program work).

thnx I'll try it!