Advantages of running VMware Server on 64bit Linux host

[wolf2k5]

Hi,

Are there any practical advantages of running VMware Server 1.0.x on
AMD64/EM64T Linux host with a 64bit OS over a 32bit OS? Is it
officially supported?
The server is question is a Dell PowerEdge 1950 with two Xeon 5100
series dual-core CPUs.

Are there any known issues running VMware Server on a x86_64
distribution like Red Hat Enterprise Linux 4 or better 5?

Thanks.