If you're talking about using the same domain.com/directory structure that you're using now, then that's simple--you just use the same structure here.
When someone goes to domain.com/images/asdf.jpg, their browser doesn't care where you're hosted, how your account is setup, etc.
Now, if you were talking about making all requests for domainONE.com/images/asdf.jpg redirect to domainTWO.com/images/asdf.jpg, then that can be done too. BUT... you'd have to keep all domain registrations active to do it, so you wouldn't really gain or save anything.
Basically, you can't let one domain expire and redirect requests to a different domain.
Or am I not getting what you want to do? If not, let me know with an example.
The easiest thing you can do is host the domains here and use the exact same structure that's already in place.
When you open an account here, you'll have your own home directory, like /home/your-user-name/, which will contain directories for each domain you add.
So, you could have /home/your-user-name/domain1.com
If you put a folder in the domain1.com directory called images, that will be the same as domain.com/images works for you now. Even if your host has a different structure, like /home/user/public_html/domain.com or anything like that.
Let me know if that helps, or maybe post a specific example of what you want to do.
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