siemens s7 software v5 3

Siemens S7 software (V5.3)

I 'm Using Siemens S7 programm for a PLC. This programm was working (and ofcause installing) perfectly under Windows XP. Now (Under Windows Vista) I can't get it installed, It's hangs Up if the software is registrating.
Even Ctrl-Alt-Del doesn't work (to shut-down the Software) does anyone know how to handle this? Thnx Peter

Windows Vista

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