There is a good web site that will give you step by step instructions as well as pictures on how to do it. Also, it gives you a page to order the plugs you need. It is:
http://www.thesaabsite.com/95/95faqs.htm#Spark+Plug+Replacement+%28Cars+With+Direct+Ignition%29
Here is the page to order the plugs from Bosch:
http://www.thesaabsite.com/95/95ignition.htm#SPARK+PLUGS
Here is the link to how to change the plugs:
http://www.thesaabsite.com/Sparkplugremoval.htm
With those two web pages, you should be set. I have followed them myself with no problems.
http://www.thesaabsite.com/95/95faqs.htm#Spark+Plug+Replacement+%28Cars+With+Direct+Ignition%29
Here is the page to order the plugs from Bosch:
http://www.thesaabsite.com/95/95ignition.htm#SPARK+PLUGS
Here is the link to how to change the plugs:
http://www.thesaabsite.com/Sparkplugremoval.htm
With those two web pages, you should be set. I have followed them myself with no problems.