First off, SpywareBlaster does not clean infections, it only blocks some known sources of spyware and other crap.
Spybot S&D and Ad-Aware are both outdated. Try downloading and scanning with Malwarebytes' Anti-Malware. I am assuming you will not be able to access the official MBAM site if you cannot access either Spybot and Ad-Aware. Do you have a USB stick or something similar? Download MBAM onto your clean computer and transfer it onto your laptop. If not, try downloading MBAM from this link here: http://download.bleepingcomputer.com/malwarebytes/mbam-setup.exe
If MBAM will not install, rename the installation file (mbam-setup.exe) to something else (e.g heregoes.exe) and try again.
If installation is successful but MBAM will not run, try renaming the program file (mbam.exe - which by default installation is located in /Program Files/Malwarebytes' Anti-Malware/) and run it by double-clicking on the new filename (the shortcut will no longer work as the file has changed).
Perform a quick scan and remove any threats found. If you were unable to update the MBAM definitions file, perform a scan anyhow, then update it and re-scan after the initial scan and removal.
After that, download and scan with SUPERAntiSpyware just to double-check that you are clean.
http://www.superantispyware.com/
EDIT:
Another method of downloading MBAM is to boot into Safe Mode, download it, then boot back into normal mode (a simple reboot) to install and run it. Do not install or run MBAM in Safe Mode; it uses a special driver that does not work in Safe Mode.
How to boot in Safe Mode: http://www.computerhope.com/issues/chsafe.htm (ensure you select 'Safe Mode with Networking' or you will not be able to use the internet)
EDIT:
It goes without saying (I hope), if you ever use a USB stick on an infected computer, ensure you scan it using good anti-virus software before using it again.