Nvmd, problem solved. The difference was selecting (digital) as opposed to not, when selecting provider.
Ok so, I decided to hook up my Verison FiOS cable to my mom's new computer. I ran the set up tv wizard thing like 4 times (which is the annoying part because it takes FOREVER) and everything worked great. The problem is, is that after everything is said and done, the tv works.. From channels 1-49. I'm not 100% sure why, but even in the Media Center wizard, it has you select what tv service you have based on your area code, the FiOS is on there. And my channels go up into the thousands (music channels). Any reason why this is happening and or how I can fix it?
Now to save time i'll tell you what i did do. I did look up online and find one solution. To go into the windows folder and find the mce whatever.xml what ever file. I opened it up. They said to set the maxchannel=49 to how ever many you have. So i looked in there, and it has like 39578345 channels listed in it, with 2 hundred something being the max (because it there are ALOT of local channels they leave out) and yet, I still cant tune past 49.
ALSO, running windows Vista Prem all up to date.