[Total Failure...Can't move, can't Rez...Land says it's for sale]

I've tried to log in to SL...only to find that my Avi stays as a cloud...when it does let me rez...I can't move...doors and pretty much everything isn't rezzed properly. I can't teleport...and I can't change my clothes. I'm using the SL Viewer 3.0.0 and nothing is working at all. I'm using my Nvidia GE Force 9500GT Graphics Card? I know the type of Graphics Card is important but would it mess with everything like this even movement?

[I keep getting the Login Failed Despite our Best Efforts, something unexpected has gone wrong]

It won't log me in on the 2.8.0 Viewer, I've reset the modem, router, turned off the computer restarted it, cleared the cache...nothing is letting me online.  Even when I try the Earlier Viewer 1.23.5 I can log on..but then my avi is on a permanent AFK mode where I can walk around but my head is always down.

Can you help me?