The processor has no effect on the video output. You need to match PC video outputs with TV video inputs, and audio. If there is no match you either change video cards (or add one) or chage TVs. And USB does not carry video. Round one?
Since there are a gazillion video and audio connections ranging from analog (what you have now) to digital, HDMI. You really need to get familiar with the connection types, then investigate what the PC uses and has available. Look at the video inputs on the TV. Find a video card with the same outputs.
To use a new flat screen monitor with a pentium 2?
There is no usb port, only the old round connection so I am wondering if there is some kind of adapter that I could buy so that I dont have to use a monitor thats the size of the Titanic.