Thanks Sergey, but I'm looking for a OS setting (in registry?) solution.

>Maybe http://www.levelextreme.com/ViewPageNewDownload.aspx?Session=44347670463162536764513D2049783530426B724C6B4242457A4834687572315374673D3D will work for you
>
>>Is there any registry configuration in Windows Vista / 7 for messagebox function that make same behavior than in Winsdows XP?
>>Try this in command windows in both Windows XP and Windows Vista / 7:
>>
>>MessageBox("This is a messagebox that make an unwanted word-wrap after this ... (AnotherLongWord) in Windows Vista / 7")
>>
>>Implement a user defined form for messagebox is not an alternative.
>>Reformating messagebox text is hard, but better solution.
>>Any other solution, at OS configuration level?