I just looked up your TV set (you mentioned Toshiba 61H70 in another thread). Looks like you indeed have component inputs only: no HDMI, no DVI. This is one of those early HDTV-ready sets released when digital interfaces were not standard yet.
I think you should really consider upgrading your TV set in the near future. These days you can buy a much better set for a fraction of what you probably paid for this set 10 years ago. You will benefit in several ways:
1. Since this is a CRT, it is probably not as bright and not as sharp as it used to be.
2. Even if the CRT guns are still good enough, CRT RPTV sets never had full HD resolution, especially in horizontal direction. Just because it can accept the 1080i signal, doesn't mean that it can preserve the HD resolution when displaying it.
3. CRT RPTV's are interlaced, while all modern TV sets are progressive.
4. The 4:3 aspect ratio of your TV set significantly degrades HD picture quality. Most of HD programming today is 16:9, or even wider. With a 4:3 TV set you either get black bars at the top and at the bottom of your screen, or you have to zoom the picture. In either case you lose the resolution.
When you put a modern big-screen HDTV set next to your old one, you will be amazed by the difference in picture quality!
If you are not ready for a new HDTV purchase, then go with a last year's Blu-ray player model with component output. That will buy you some time.
Good luck!