I Am In Doubt, Can I Use Spyware Removal Software?

Yes. You need protection from spyware if you use Windows.
Spybot is the best free anti-spyware tool that that contains many features.http://www.safer-networking.org/
Spybot immunize your computer against some spyware.
It modifies Internet Explorer to block a lot of the bad stuff known to Spybot.
There is a second layer of protection for IE that blocks anything that should come through by different aspects.
Spybot Resident a tool which check permanently running application to protect your system.
Spybot Resident TeaTimer is a tool which perpetually monitors the processes called/initiated and immediately detects known malicious processes.
It giving you some options how to deal with this process in the future:
You can set TeaTimer to be informed when the process tries to start again automatically kill the process or generally allow the process to run
There is also an option to delete the file associated with this process.
In addition, TeaTimer detects, when something wants to change some critical registry keys. TeaTimer can protect you against such changes again giving you an option: You can either Allow or Deny the change.
Spybot host file locking is a tool which locks the hosts file to prevent unauthorized changes.
Locking the hosts file will prevent most hosts hijackers (even unknown) from doing harm;
Locking the IE settings will prevent other users of your computer to change your preferences.
Spybot ActiveX is a tool to display a list of installed ActiveX applications it will display a green checkmark in front of ActiveX applications known as legitimate,
and a red sign in front if applications known as illegitimate
Spybot process list is a tool displays a list of all currently running processes,
including some information about them. It also allows you to kill some processes
Spybot System startup tool lists all programs that are started at Windows startup.
If those items are in the database coming with Spybot, it will display some more information about them.
It also allows you to disable (and enable) items, as well as delete them, change them or insert new items. The entries will be displayed in different colours:
Green: legitimate program
Yellow: unknown, unneeded or unambiguous program (e.g. malware programs might use the same file name as legitimate programs)
Red: malicious program
Spybot system internal is a registry cleaner that fix error in windows registry.