Johnny V - I have made a RGB scart lead.
First, buy a digital video lead for gamecube (officail ninty one) from lik-sang.com
It will cost around £24 inc. delivery.
http://www.lik-sang.com/info.php?cat...oducts_id=777&
Now follow these instructions here :
www.rgbcube.co.uk
Remember, you also need to combine your new digital lead with the existing analogue one you got with the cube.
Also remember to leave the audio phono's alone (don't splice them into the new scart you're making), and ensure you follow the instructions that allow you to make it "auto-switched").
You'll need a soldering iron and a couple of resistors (maplin) and you're away.
It took me in total about 2-3 hours. It was VERY fiddly work, but doable (i'm a klutz and I did it just fine

)
I now have a combo lead with two connectors GC connectors (both click into the digital and analogue ports at the same time), and at the other end, a true digital rgb scart terminal and 2 phono's (audio L/R) seperately.
Total cost, about £28
Finally, the scart leads you buy over here in UK are Composite scart leads from the analogue output (Not digital rgb scart's) so the picture quality is the same as using your existing yellow phono lead. There are NO official scart leads. Nintendo ONLY make a digital D-port lead (Jap's version of Digital Flat Panel) and a digital component lead. Nintendo does not make a Digital Output Scart Lead

- you'll have to make it yourself. There are third parties that make them for you (yes, they make them following similar instructions) and they cost around £40 or more delivered. These ones have combo audio/video scarts but also have a breakout module in the wire that allows you to connect an audio lead (2phono-2phono) between their lead and your amplifier/tv.
If you're not very good at soldering, this might be for you.
Overall, picture is now better than my ps2 via s-video was, so it's worth a go.