The best for you is using a HDMI-DVI cable:
then for getting sound you can actually use the default cable you get with your ps3 (the ****ty composite cable) and use those 2 audio tulip plugs ( you can change sound setting in control panel so you use the ps-connector for sound and hdmi for image). Using that sound stuff you can just connect it to whatever you use to play sound on your computer, without forcing you to a headset.
Image (hdmi to dvi cable of any brand you like):
http://www.digitalconnection.com/spec_images/shdmidvi_rg.jpg
Sound (cable comes with ps3):
http://www.forestals.com/filebank/imagebank/products/entertainment/accessories/avcompositecable.jpg
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Otherwise those 3 you have is for a component connection you can grab the ps3 component cable too (hdmi to dvi you can take any generic one for the composite connection you need one with a ps3 connector), comes with audio stuff.
image and sound (uses the ps-connector so you need to buy a branded cable):
http://www.loonyblog.net/wp-content/uploads/8223013_sa.jpg
image quality is not bad but the DVI one is better might work out nice if you don't want to hot swap cables)
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Finally you could get a Dsub connector for the ps3 apparently there is an official one quality is about the same as component although degrades faster by cable length although often in computer monitors the d-sub scaler works better than component, comes with audio plugs:
image and sound (uses the ps-connector so you need to buy a branded cable):
http://cache.kotaku.com/assets/resources/2006/11/ps3cables.jpg