Last night my furnaces blower motor started making noise. I planned on calling someone to check it but shortly after I got home, it REALLY was loud so I shut off the breaker for it and the thermostat.
Here are the pictures...

http://www.flickr.com/photos/45460567@N05/

It is so old... is it possible to just get a new blower motor installed for it?
Is it something I could do myself or with my sister?
Am I going to have to buy a new furance and ruin my kids Christmas?
Help?
Any suggestions would be so appreciated.
-Lisa