Help: Spybot Cannot Fix Problems

:cowboy:I am new to Spybot-S&D, although I used it a year or so ago, and managed to clean up my problems at that time without any help.
This time, I have deeper problems. I have registered for the forums, but honestly, there is so much to read, I am totally confused as to know what to do to get help. I am almost afraid to post or start a thread for the fact that I may break a forum rule, but since I am desperate, here we go:
I have contracted a virus or more than one in my PC. I couldn't even log onto the internet to download Spybot upgrades the other night. I couldn't even open My Documents, Control Panel, etc. I couldn't open anything. I finally managed to do a "system restore" back to a little over a month ago, and this let me get on line and update spybot. I have ran a scan or two, and it found numerous problems. When I click on "fix problems", I get the error message:
Unexpected error in fixing prolems.(cannot create file "C:\WINDOWS\System 32\drivers\etc\hosts" Access denied.
Could the restore be the reason that it can't fix the problems? Would appreciate any help I can get.

Hello,

Please delete your old host file.
Where the hosts file is located depends on your Windows version.
Windows 2000/XP/NT: C:\windows\system32\drivers\etc
Windows 95/98: C:\windows\hosts

Then download a new host file from this site.

This is how to do it:
Create a new txt file with notepad on your desktop.
Name it hosts. Then right click and choose rename.
Now remove the .txt so that you have a file without any extensions, just named hosts.
Then go to this site.
Mark the whole text. Then copy the whole text.
Open your new hosts file and insert the copied text here.
Save the file.
Now move the file by copy and paste to:
C:\windows\system32\drivers\etc

Best regards
Sandra
Team Spybot