How do I connect my Nintendo DS to PC speakers or an amp? (Hiite Utaeru M-06 )

[goodison1234]

I have a decent sound card in my PC and I would like to know what connection I'd need to link Nintendo DS to my PC.

I need to connect my DS to my PC speakers for enchanced sound, specifically for the Hiite Utaeru M-06 'game'/simulator. I have seen it hooked up to an amp on internet demonstrations for it so I assume this may be possible. For now I use headphones which do the job okay.

Thanks, Alex.