How do you save an online recipt as a PDF instead of printing?

[EdwardTeach]

E.g if you place an order online you are usually given the option to print off your order conformation.

On my mac when I choose to print I have the option to save as a PDF instead - I don't seem to get the option on my pc. Surely this is possible, if so how?

 

[EdwardTeach]

thanks i downloaded cutepdf it does exactly what i wanted.