All seems to be good- you said your last run of the utilities found no infections, and your HijackThis log is clean. :)
is there anything I should restore (i.e. checking/unchecking certain properties)
You'll probably want to reset the Explorer options which revealed the hidden files and folders.
should I uninstall the anti-spyware tools I downloaded? Are there any you suggest keeping?
* Uninstall Webroot SpySweeper, as it will stop working entirely after the 14 day trial period expires.
* Keep MS Antispyware installed; it provides good "real-time" protection for your system.
* I'd keep ediwo also; it's a very good anti-spyware program. Although its automatic update and auto-protect features will expire after the trial period, the main program can still be used to scan and clean your system; you'll just need to update it manually before scanning.
* I'd keep CCleaner as well; it's a good idea to run a program like that every once in a while just to clean out old/unused files that accumulate over time.