Hi, Teresa, this is an interesting problem.
Could you confirm me if you have these two values under your
HKEY_CLASSES_ROOT\.css registry key?
Content Type REG_SZ text/css
PerceivedType REG_SZ text
Create them accordingly if missing. (REG_SZ stands for "String Value".)

Signature
Regards,
Daniel Martín
Microsoft MVP Windows - Shell/User
> Whem I open Help and Suport in Start Menu, I can view all informations,
> but the format of HTML or XML, is the default, without the original style
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> Tks
> teresa
teresa - 30 Apr 2007 18:54 GMT
Yep!!
I don't have this two values
But I create it and works!
Thank you Daniel!!!
> Hi, Teresa, this is an interesting problem.
>
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>> Tks
>> teresa
Daniel Martín [MVP Windows] - 30 Apr 2007 20:24 GMT
You're welcome!

Signature
Regards,
Daniel Martín
Microsoft MVP Windows - Shell/User
> Yep!!
>
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>>> Tks
>>> teresa