Here are the specs: Microsoft Windows XP Media Center Edition Version 2002 SP3
Packard Bell. Intel (R) Pentium (R) D CPU 2.80GHz 1.00 Gb of RAM
In theory - yes - is the short answer. You meet the minimum recommend specifications.
The quickest way to find out is to download the ISO and either burn it onto a CD or write it to a USB stick.
Follow the 1 - 2 - 3 guide on the Ubuntu website.
You can Ubuntu from what is called a live CD - if everything looks ok - go ahead and install
There is more than Ubuntu for you to explore as well (download links below)....
It will work Although it will be good to update your RAM to 2GB or even 4GB. I had 1.9GHz CPU and it worked fine with 10.04 and I don't think there is much thinks to make it not work! But my advice is install 10.10 and if it performs well upgrade to 11.10.