Ah, no worries. I'm actually using an HDTV for my Xbox gaming. I just wanted to give you some advice on AV cables.
I wouldn't go with RGB SCART because then you'd be limited to 480i. This is perfectly fine for a CRT, but should be avoided on an HDTV for two reasons. One, you can get flicker with an interlaced signal versus a progressive one, which may or may not bother you. But more importantly is two, your TV might not deinterlace all that well. And especially bad is if your TV adds a ton of lag during the deinterlacing process, which I would assume it would.
Component cables would be great, but I will caution you that the most widely available ones these days are shit quality. My first Xbox came with composite cables, which look great on a CRT but it was a blurry mess on my HDTV. Knowing I wanted to eventually get something else, I just wanted to grab some cheap component cables for the meantime. So while I knew they weren't shielded properly, I grabbed a cheap set of component cables. The ones that can easily be found everywhere for around $10. They do look a crap ton better than composite, but because of the poor shielding there is a ton on interference. I bought them knowing this would be the case, and just because I knew it would be a temporary solution. But yeah, I would totally recommend getting something better!
It doesn't seem like anyone is making quality Xbox component cables these days, just those cheap poorly shielded ones. You can get old stock ones from eBay, like Microsoft's official products or Monster cables. But they are kinda pricey, and for the cost of those you can get something more modern and arguably better.
Here are some pros and cons of the two I'd recommend...
XEDUSA+ -
https://www.beharbros.com/product-page/xedusa-plus
The Xedusa is the more versatile. It will convert (but not upscale) the video to HDMI and output either stereo or surround sound over HDMI as well. Although the catch there is that "some" 1.0 revision consoles have an issue outputting audio over HDMI, which kinda sucks. The Xedusa will also output component video, as well as analog and digital audio. For digital audio, it can output optical or coaxial (the yellow RCA jack is digital audio out, not composite video). So with two video output and three audio output options, it's extremely versatile. And that's why I got one. The HDMI output looks amazing on my HDTV. Unfortunately, my 1.0 Xbox does in fact NOT output audio over HDMI. But the surround sound in games is great when I use my 1.1 Xbox. I wanted the ability to output HDMI, but I also wanted component as an option in case I want to use my RetroTINK 5X for upscaling. If you got the Xedusa and wanted to use component as an option, just be sure to use quality component cables. Otherwise you might as well just get the $10 cables LOL.
ElectronXout -
https://electron-shepherd.com/products/electronxout
The ElectronXout is more limited than the Xedusa in that it only outputs HDMI. Although they fixed the problem with 1.0 consoles, so the HDMI works better than the Xedusa. So for that reason, as well as the cost difference, if you're only interested in HDMI then I would recommend getting the ElectronXout. And if you think you're only going to be using an HDTV, then I would say just stick with HDMI because everything is easier. Also, this product is probably cheaper than what you'd pay for an old used set of Monster cables or Microsoft's HD Pack. I ordered the ElectronXout for myself but do not have it yet, they are out of stock but are suppose to be back in stock soon.
No matter what you do... Component cables, Xedusa or ElectronXout... Once you hook up those better cables, go into the system settings and turn on widescreen, 480p and 720p output. A lot of people recommend keeping 1080i set to off, which I concur. I don't think many games even support that resolution anyway, but it's worse avoiding an interlaced video output for the reasons stated above. And if you have a cable that can output digital audio (Microsoft's HD Pack, Xedus, ElectronXout) then also be sure to turn on the digital audio output options in the system menu if you have a surround sound system to take advantage of it (I guess this doesn't matter if you're just using your TV speakers).