I would probably do the same, providing the system is now running correctly, Dave. You might want to try a scan with
www.hijackthis.de and post the log file in the box provided for analysis. 'alg.exe' and 'services.exe' are both valid Windows services, and as they seem to be in the right place, they should be safe, but SpySheriff and it's counterparts is such a tricky piece of malware, it might be best to be certain by scanning with a couple of anti-spyware scanners, to put your mind at ease.
I have just started using
Cyberhawk, which I think is a fairly new utility. It's too early to say whether it works or not, but it is free, and probably wouldn't do any harm to have as an extra security layer.