Hi, have a look at these All are free,
If you want free Antivirus and free antispyware,
Here is a list of recommended free downloads.
1/ AVG Antivirus click here
2/AVAST Home edition click here
<font color="red">Attention Only use One Antivirus</font>
<u>You will also need a firewall</u>
1/ ZONE ALARM click here
2/ COMODO click here
3/ Ashampoo click here
<font color="red">Attention Only use One Firewall</font>
<u>You will also need Antispyware</u>
1/ Spybot search and destroy click here
2/ Superantispyware click here
3/ Ad-AWARE SE PERSONAL click here
4/ SPYWAREBLASTER click here
5/ WINDOWS DEFENDER click here
<font color="red">Attention You can have All these Antispyware But Only Run One At ATime</font>
<u>Just to tell you a little about windows defender.</u>
Windows Defender is able to detect and remove more threats posed by spyware and other potentially unwanted software. Real Time Protection has also been enhanced to better monitor key points in the operating system for changes.
<u>Also a little information on Spywareblaster.</u>
Rather than remove spyware once it has been installed on your PC, this software prevents it being installed in the first place.
Hope this has been of some help to you .