Currency Converter Please Help!!!

Hello Everyone,

So I have created a customer facing model for my work. Basically customers input their current data ad hardware and it compares prices and costs of their current hardware to our hardware pretty simple it is made with just a bunch of minor formulas. But my boss asked me to create a macro which would convert the whole model from US dollars to other currencies like euro's and british pounds. I have no idea how to do this all I know is that it requires VBA. Can someone please help I would really appreciate it. Also I may not know all the techincal terms about excel so if you could make it noob friendly that would be great.
Thank you guys!!

Hi Guys,
Sorry I just wanted to add that I was able to create the conversion using if statements and formulas but my boss didnt like it he wanted a macro. Any help would be great.
Thank you

here you go

hello here it is let me know if you can open it

cells on input page B19,B20,B27,F22,I22 basically all cell that are currency figures on the input page. The currency pulldown I amde on the iput page was just for the currency formatting. Ideally what I want to do is a have button on the input page with a macro that can just change all the currency cells on the input page.
thank you