If removing the recovery folder didn't work, I suspect you're going to need to remove the existing installation and reinstall (is this on a server, or local?). You'll probably need to run both the CS3 clean script and the Microsoft msicuu2 cleanup utility before reinstalling. That .dll, by the way, seems to be a Windows component, though from what I gather through Google it is a common source of trouble with calls from other software.

Installing CS3 was a pain, and the installer is very sensitive to conflict with just about everything under the sun, so you need to run it in a bare-bones boot (but not safe mode). I turn off ALL non essential programs and services using MSConfig when doing a CS3 install.

That said, yes, running the CS3 clean script will probably remove all things Adobe from the system. The Microsoft utility is much more benign than the description makes it sound -- it removes registry information for previous installations so there is no trace of them to confuse the OS. I'm not aware that it has removed anything other than what it was told to remove, but I've only had to use it once, I think.

You can try a simple uninstall/reinstall first (and you should be able to remove and reinstall just ID from the suite if you use the original disks). That will certainly be faster and less painful than the clean script, but may not work. Seems odd that a serrver crash should have corrupted a local installation, though, so you might want to take a close look at the machine for other problems, perhaps some sort of malware invasion.

Peter

In my experience running a system resore on an infected machine will not clean out the infection. You need to use whatever tools are available to kill it, then purge the restore data which is usually also infected, and set a new restore point for going forward.