Error Message when trying to print

:eek:I am hoping someone can help me fix this problem.
On some site when I try to print coupons it gives me this error.


""We are not able to support coupon printing on your system at this time. The Coupon Print Activator is supported on Windows Operating Systems 2000, ME, XP and Vista when used with Internet Explorer Explorer 6.x and 7.x, or Firefox 2.x and 3.x. Coupon printing is not supported under Linux, Unix or Web TV platforms. Please try again from a machine that meets these requirements. "

I am using IE, and Vista, so I am not sure what is going on here. I can print other coupons fine, but certain sites I get this error. Any help is greatly appreciated.
Michelle