Reply to Monitors

I have a set of speakers/subs that I purchased for my PC last year and I want to know if they acceptable for production/DJing as well.

[ame]http://www.amazon.com/Acoustic-Authority-3780RB-Subwoofer-Satellite/dp/B0000CC7A9[/ame]

I don't really know what exactly to look for in a set of monitors but I do know these plug in fantastically without an external sound card which I love.