I am working for Bentley leathers and I we have a password calculator (.exe) and I am wondering if I could put it on my iPhone or the compagny BlackBerry so that way it would be easier then to have a ton of paper with me.
Assuming you mean a Windows .exe, no you can't, the iPhone and Blackberry apps run off their own operating systems.
No since the operating systems are not windows, why don't you create a password protected website with the same functionality so that you can access that from any device with a browser
Is there any way to transform the .exe so it can run on something else than windows ?
I suppose that password calculator is a software to generate session passwords for the intranet/vpn/whatever.
You can't launch it on Blackberry or on iPhone but your company can order development of this tool for someone and after that distribute it inside the company. I know at least one company who already did it for iPhone. You can order this development. For sure a lot of people will be glad to do that (bu you should go to the Jobs section with this offers). But developer will need a specification with description of password generation.