Problem with controls appearance on different versions of Windows

[SimmyC]

Hi All,

Please can some one help me with this. I have written a simple vb.net prog with a MonthCalendar (ver framework4) on it. It runs well on all computers, except for the only XP machine. On this machine the control looks different and although it works the same, when you select dates they turn white so you cant read the text!

Please see picture attached.

Any help is very much appreciated.

Best regards,
SimmyC!