Ubuntu installed drive gone missing from Vista

[zupermankochi]

I have Vista in my C drive.My D drive was of 40GB.I freed 20GB from it and installed Ubuntu 9.04.After that when I boot to Vista it showed me a screen "New Hardware Found".I used to Ignore it.My D drive(which is now of 20GB) was well visible until when I unfortunately clicked "Never Ask me again".Now it has gone invisible.I m not able to access those 20GB files from Vista.Is there any way by which i can make my D drive appear again in Windows Vista.

Please Help !!

[pastalavista]

Run the "new hardware wizard" or whatever Windows calls it now or use the disk management tool. Right-click My Computer and select "manage". This is just what I remember from Vista as I haven't used it for over a year.

[zupermankochi]

I hv tried both methods.it doesnt work