Paige, are you saying that regular "yellow" RCA plug at 480i looks better than RGB componet video at 480p? I am under the belief that componet looks the best than Svideo than finally composite.
It might also very well be the possibility that the 480P is so sweet that it is showing off the flaws in the original DVDs/tapes/Divxs/etc. Some of them do look better with 480P, but enough of them don't that I have been running 480i instead.
Also, annoyingly enough my monitor has no zoom modes available when running RGB.
Finally, I have always thought it was funny that every widescreen set is 16:9, while it seems like 80 percent of the widescreen content out there is 2.35:1 and fifteen percent is 1.85:1, while the remaining 5 percent is actually 16:9. Searching through all my DVDs so far I have only found one 16:9 movie (Total Recall), compared to about 30 2.35:1 movies and several 1.85:1 movies.