How can I connect a imac to the Dell 5 1 THX lucas films surround sound

[gogetbrett]

I'm trying to connect the Dell 5.1 THX to my imac. Does anyone know how?

 

[rexter]

Is that the brand and model of your system or you're talking about this one?

http/reviews.dell.com/2341/A0405790/reviews.htm