i want to design the Currency gadget .....that should work in all the operating system it should be something like installation application as shown in the above daigram so please help me out

Thank you
currency_converter

I suggest you re-think your post giving far more information and showing what you've done so far, also what issues you have, and what you need help with.

Nobody is going to write you one from scratch, especially when showing little to no effort on your behalf.