Converter 4.0 to ESXi 5.1, is it possible ?

Hi,

I've a customer who want to migrate his physical server to virtual server.

He have Windows 2003 SP2, 2003 SP1, 2000 SP4 and NT4 server.

Before upgrading his server to an higher version (2008 or 2012), he want to P2V them.

The last converter version supporting 2003 SP2,SP1 & 2000 SP4 is Converter 4.0.

I'ld like to know if it is possible to use VMware vSphere Converter 4.0 to an ESXi 5.1 system ?

Same questions for VMware vSphere Converte 3.0.3 to en ESXi 5.1 system ?

Thanks for your reply.