Anti Spyware - Is there an anti spyware programme that will scan my pc for spyware without having to download it permenantly?

Is there an anti spyware programme that will scan my pc for spyware without having to download it permenantly?

My pc is quite old and I have been told that having anti spyware installed on it will slow it down by at least 25%. I am thinking what is the lesser of two evils! No anti spyware or invasion by spyware! As I am fairly new to computers I am at the moment being fairly cautious about downloading things. Advice much appreciated. I am on XP proffesional.

Public Comments

Hi, yeah u can visit http://onecare.live.com and run Microsoft's free safety scanner and it will remove all viruses, spyware, malware, adware, trojans, and registry errors turning ur pc almost as good as a fresh install. Good Luck!
There are top ten the best and latest anti-spywares in 2007. --Top Ten Anti-Spyware Software Review 2007-- the link:<--http://topten-reviews.info You can download one and scan your system. All can be trusted.
Do a free online panda scan, this program is good at removing virus & spyware: http://www.pandasecurity.com/homeusers/solutions/activescan/? Download this program, it will not slow down your computer but it will fix errors & protect you from spyware for free: http://www.iobit.com/advancedwindowscareper.html
There are two conflicting and contradictory ideas. You can run an online scan with Bitdefender.com . However, the program works by storing a library of virus patterns in your Temp folder, then running the scan in a similar manner to "offline" virus scanners. If the system slows down perceptibly, either the Temp folder is taking too much space on your hard drive OR you have a program that is continuously trying to IMMUNIZE your system by checking every file you open and every file that you close, along with every website you visit. If Bitdefender.com finds a problem but fails to fix it, post another question with that exact information. You might also try a firewall like ZoneAlarm. Many DSL services include a copy in their installation bundle without additional cost. Good luck, - CarlD