Dracona there is hope for your laptop, you do not necessarily have to buy a new one... try looking at other viewers especially the legacy viewer from cool viewer here is a link:
http://sldev.free.fr/
or check thru this wiki for other optional viewers:
http://wiki.secondlife.com/wiki/Alternate_viewers#Third-party_Viewers
I think you should be able to find something that will run well on your laptop as long as it isn't 6 years old like mine lol.
good luck!
Message was edited by: Jessika Rang - Oh and these viewers are current with the Adult option... they just dial down graphics, again take a look at the "legacy" version of the Cool Viewer