What do you do? I'm trying to save my points for a domain name too, but I'm wondering what exactly you are trading credits for? While we are talking about points, did you know about the offers? If I'm telling you something you already knew about, forgive me, but if you don't already know about them, you can get a lot of credits quickly. If you scroll to the top of your screen just below the logo, you'll see a list of starting with User CP and ending with Logout. If you click on x10, a menu will appear. Clicking on "Donate Credits" will show you how many credits you have (if you didn't already know that, if you did, sorry again.) Clicking "Offer Center" will take you to a list of offers that you can complete for points. Some of them require as little as an email address!
Even though I've told you how to manually find the information (for future reference), you may find the page directly at:
http://forums.x10hosting.com/offers.php