Getting XP look on pages when user does not have XP

Does anyone know of a tutorial or a stylesheet example of how I can get my input boxes, dropdowsn, buttons, etc to have the XP look and feel for them when someone views my page in another operating system.

Basically, someone in the office as XP (the rest have 2000) and we were thinking it would be cool if everyone with 2000 could see our webpages the same way as the person with XP does.

I'm sure I could write a stylesheet myself if necessary, but it would require toggling between an XP machine and a 2000 machine to check if it looked right. It would be awfully time consuming.