problem with bcdw boot

[white]

Hi,

i am trying to create an extented version of ubcd with bootable acronis.iso and winxp-setup in the custom.scn.

result:
everything works fine in vmware and on computer1.

on dell-computer2:winxp works. BUT calling "bcdw Boot acronis.iso" always results in a blackscreen.

any ideas what is wrong?