Just a cautionary word on trying to use SL on an upgraded Windows 8 computer, especially if it is an all-in-one that allowed SL to run when it had Windows 7 OS...you just might have to bite the bullet and but a midtower desktop in order to run SL again, as most all-in-ones tend not to have room to allow a GPU upgrade.
Personal experience...I bought an Acer Veriton Z290G (don't laugh, at the time it was an emergency purchase in a cash-challenged timeframe). Anyway, when this system was a Windows 7 64-bit machine, SL did run on it, not great, but I could do things and interact with online folks. Then, I had the chance to upgrade to Windows 8 Pro 64-bit for a mere $40. Yes, I was nervous, new way of doing things, the question of if I could adapt to a Start Screen instead of a Start Menu, yadda, yadda. Decided to take the plunge. Did the upgrade, spent about a day flipping out over getting used to a new way of doing things, but them settled down to just using the new OS.
Old standbys like Skype, WoW, Office (yes, I also bit on going to the new Office 2013), running tools like CCleaner and MalwareBytes, Nero, scanner software, printer software, network printer, a couple of other games -- all just worked. THEN I tried SL. I thought I was home free when I logged on and started chatting with an online friend. But no...SL barfed after about 4 minutes. I logged on again, and SL strangled after two minutes. Tried a third time...and SL threw up it's virtual hands in gibbering madness - I saw that dreaded message about unsupported driver/unknown hardware.
Well, I wondered if I could run Windows 7's driver software instead... found that the onboard card is an Intel Graphics Media Accelerator 3150, downloaded the most recent-dated one from Intel's website...and discovered that the driver in Windows 8 for that card is marked as newer than the newest one for Windows 7. Got cold feet at this point...I've neither trying running the older driver, nor have I tried downgrading back to Windows 7 64-bit. I DID try installing and running FireStorm, and that proggie suicided even faster that SL's base v3 viewer did.
I am just going to have to suck eggs until I can get another computer that I can UPGRADE in more ways than just RAM. Da**it, I actually LIKE Windows 8... *sighs*