dual OS on vmware?

Do you want Windows 7 and Windows XP on the same virtual machine.

or just create a new virtual machine, and specify the virtual machine location on D, and then install Windows XP as you woukd install on a physival computer.

yes on the same virtual machine.

You would install Windows XP, Dual Boot in the same way you would install on a physical computer.

It would be easier to create a separate virtual machine, and then you could have both running simultaneously.

The problem you will have is Windows XP installs an OLD Boot Loader, which will overwrite, Windows 7, so you'll then have to run the Windows 7 DVD to repair the Windows 7 installation after you install Windows XP to drive D:.

Insert you Windows XP iso/cdrom, and select drive D: for installation, and then run a Windows 7 repair afterwards to fix the boot loader.

Or Install Windows XP first, and then later install Windows 7.

(or Install Windows XP in a new VM)

I cannot press ESC to choose from where to boot. the screen  flashes so fast it does not work for me to capture the new booting windows from CD or ISO image, any suggestions please ?
very-fast-startup.png

Press CTRL-ALT-INSert, and then when it reboots, hit Escape, or F2 to enter BIOS, and Change Boot Order Sequence to select Cdrom as first boot order.

and when  I got lucky and could capture booting device i got the error no HDD found ???
hdd-error-vmware.png

this is because the scsi controller in your VM does not support Windows XP.

what storage controller are you using in Windows 7, check VM settings?

here it is on the image, what should i do?
scsi.png

Respect and appreciate for your time and knowledge.

thanks for your kind words.