Xeon Core 5130 couldn't support full-virtualization?

[Zhen Zhou]

Hi, lists,
Now I dive the sea of xen, I took a Dell 2950 Server, install FC 6 i386 on it,
I refer some documents about Xen:
http://www.fedoraproject.org/wiki/FedoraXenQuickstartFC6
So i checked as following:
1. check Intel VM for host CPU, it works, it showed me:
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc pni monitor ds_cpl vmx tm2 cx16 xtpr lahf_lm
2. check hvm-??, then I have no luck. even I enable virtualization in BIOS.

so how could I enable fully-virtualizied  in this server? or should I
install x86_64 for it?
Because this server CPU is Intel Xeon Core 5130 serial.

Thanks a lot,

Zhou Zhen