Okay, so then your site was definitely "working" on 12/16/2007. That is good, as it is likely that the DreamHost snapshot directories have your files from that time.
This confuses me, because normally you would have a WordPress site running at one, or the other, url but not usually at both (though I suppose you could run two different sites that way, with some changes to re-write rules- I just suspect that you have not done that. To be clear, do you have two separate WordPress sites runing, one at http://http://www.mywildcrazyspace.com/ and one at http://www.mywildcrazyspace.com/blog/ ?
Ok, well that is a little discouraging as one way to fix the site involves copying files between your computer and your server via FTP. Maybe, if we have to go that route, some of what is involved will come back to you. Is your partner still available to help you with any of this?
If you log into the DreamHost Control Panel, and go to the Users -> Manage users screen and look under the "Type" column in the row for your user name you can see whether it is set to "shell" or "FTP".
To use the files in the DreamHost snapshot directories to rebuild your WordPress installation, we will either have to use an FTP program to copy the required files from the snapshot directories on Dreamhost to your computer, and then copy them back into your site's directories in the proper plac(es) or log in to shell and use linux commands to copy the files between the snapshot directories and the proper directories for your site.
If you are not capable of using either FTP or the shell, this will be very difficult to do, as there are several steps in each one requires some understanding of what is happening.
There is an additional DH Wiki article that describes in detail how to restore files using the snaphot directories which should be very helpful in your particular case, as it uses an actual WordPress installation in it's examples.
Please take a long look at that article, and try to follow the steps there to retrieve files from the snapshot directory that hold files from when your WordPress last "worked" to your computer, and then use an FTP program to place those files back into their proper directories for your WordPress installation.
If this is too difficult for you, and you can find no one who knows about this stuff to help you, I am willing to look into your directories for you. While I do not recommend providing your credentials to any unknown person, if you want me to look at it for you I will need your FTP username and password (which you can supply me via PM - do not post them into a post on this forum).
Alternately, if you can manage to get yourself logged into the shell, I am willing to try to give you a "step-by-step" on how to copy the appropriate files from your snapshots directory into the proper plac(es) on your site (but I still need clarification on the "two WordPress installations" question above.)
Instructions for how to enable your user for shell access, and how to use an SSH client to login to the shell, are available in the3 DH wiki category "Shell". Make sure you read all the articles there, and you should be able to access the shell on your account.
Other than that, the only thing I can suggest is that you study up on how to use an FTP program and how to move files between the DreamHost snapshot directories and your computer and your WordPress directories... that is what will need to be done.