Windows 8 Hyper-V

After playing around with a Win 8 guest, I tried to install Hyper-V and and it wouldn't work saying that a Hypervisor was alrady running.  So, I reread the Nested VM document and changed the type from Window 8 to Hyper-V, that solved this problem but then it won't install as is says my processor doesn't suppor SLAT.  Strange, I'm already running nested vm's, Player 5.0>ESXi 5.1>Win7.

Anybody have suggestions on how we can make this work?

Host:          Windows 7 Pro

Guests:      Windows 7 Ent     

                  Windows 8 Ent     

                  Server 2008 R2     

                  SUSE Ent  Server     

                  Linux                   

                  ESXi                     Win 7 nested

All OS's are 64 bit.

Hardware:    Thinkpad T410 Core i5, 8 GB Ram, 750 GB HD

                    VT-x and Execute Disable checked