Hello redearth1, and a warm welcome to the forums! 🙂
It's not clear here about this accident... did things end up in the Trash that you didn't put there?
Could be many things, but it's best to start with these two steps, which may fix it also...
"Try Disk Utility
1. Insert the Tiger Mac OS X Install disc , then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, *you must select your language first.)*
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk."
Then Safe Boot , (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it finishes.
Safe Boot... holding Shift key down at bootup. Safe Boot is a special way to start Mac OS X 10.2 or later when troubleshooting.
http://docs.info.apple.com/article.html?artnum=107392