Hi Martineau,

Try set SET CLOCK OFF.
Exist utlity, but for FoxPro DOS (http://www.ezop.cz/sw/foxfree.com), suffice it run before DOS application.

MartinJ


>Hi
>I have found that when a old FoxPro Window run on forground of Win Xp my cpu Usage turn around 0 an 2 %
>
>But when I put it in background The cpu usage top to 100 %
>
>Any tips ?
>
>TIA
>Benoit