I have been installing lots of virtual machines on my FREE VMware ESXi server. Most guest OS's install great but I had a problem with Windows XP Pro 32-bit.
When you go through the install Windows XP does not find any hard disks and therefore will not install.
What you need to do is download a file called vmscsi-1.2.0.4.flp and then in the virtual machine setup make sure the floppy setup looks at the contents of the zip file. Then press F6 during install and it will read the file and then find the virtual hard disk.