Have VS studio 2009-istalled VB - cant install C#

Hi I have been using VB for some time now and wanted to have a look at VC#
so I went to control panel "programs and features"
and called up VS install maintenance
selected C# to install and keep getting this error message which I cant get past and I dont understand at all.
Nothing has changed on my system except a backup drive?

message is:
"a selected drive is no longer valid please review your installation path settings" setup VS 2009

I cant browse to the folder as it is greyed out ? I dont know what to do.

Any help appreciated

Mike

Sounds like it installed from a disc and the disc is no longer in the drive so it can't install.

Why didn't you just install all the languages when you installed VS? I stopped using C++ a few years ago but had to open some code and even develop in it not long ago. It's useful having the option and hard drive space is cheap nowadays.