Very good question.
Yes you can.
In the x10 control panel, you can get the adcode, and place it in every page of your site.
Once you do that, just post back here, and I'll send the post off to the support staff who can review your site, and apply the ad-enhanced package.
You get a lot more stuff, including sub domain, disk space, SQL databases, SQL users, email accounts, bandwith, etc.
I have the package, as well as the double-all package.
The package usually has 2500 mb of apace, and now I have 5000mb of space. =] it's a great deal for just 4.95 one time.