Older viewers

[Nyll Bergbahn 1,050]

Links to older versions are here http://wiki.secondlife.com/wiki/Old_versions

I would suggest you also consider a lighter third party viewer such as Singularity

http://wiki.secondlife.com/wiki/Third_Party_Viewer_Directory

ETA: This is a better link for older SL versions that work http://wiki.secondlife.com/wiki/Supported_Viewers

[Nyll Bergbahn 1,050]

Links to older versions are here http://wiki.secondlife.com/wiki/Old_versions

I would suggest you also consider a lighter third party viewer such as Singularity

http://wiki.secondlife.com/wiki/Third_Party_Viewer_Directory

ETA: This is a better link for older SL versions that work http://wiki.secondlife.com/wiki/Supported_Viewers

[Rolig Loon 22,410]

Yes, and no.  You can go to https://wiki.secondlife.com/wiki/Release_Notes and find links to download past viewers --- at least some of them.  This is not a good time to be doing that, though.  Within a couple of weeks Linden Lab will be releasing the next viewer/server upgrade, which includes Sever Side Avatar Baking.  That upgrade will finally solve one of the most common, annoying problems that SL residents have dealt with since Day One, but it will also mean that all previous viewers will fail to work properly.  If you are using an older viewer, all avatars will appear gray.  So .... yes, you may re-install an older viewer but no, you don't want to do that.

[Chic Aeon 11,038]

According to Singularity's website they will be including the new server side baking code, so that is your best option. I can run an older version of Singularity on my seven year old laptop although at low graphics setting. So I am guessing it may work for you. It seems to be the best for older machines from what friends tell me. Good luck.  You might want to wait until the change happens as I am guessing there will be BIG changes . We can only hope that most will be for the better.