AFAIK, the only way to do it would be to use something like debugfs - which has a command called lsdel, which can be used to search for deleted files. I've never used debugfs though - so you might want to do a few web-searches and look it up.
Debugfs can also be used to restore deleted files, but if the machine has been in use a lot since the hack/intrusion you mentioned in one of your other threads - it is possible that the space formerly occupied by deleted files has already been completely overwritten . So you might only get a partial list of deleted file-names, if anything at all.
Other than that, I'm not sure what to suggest!