WP Super Cache

Hi,

Have searched but not found a post applicable to me.

I have a WordPress site hosted internally on a Windows server. When accessing the dashboard I get the following message popping up:
Warning! C:\Server\Apache2\htdocs\bcp/wp-content is writeable

I know this needs it’s permissions changing but all information is related to Unix. What permissions do you need to change in a Windows environment?

Thanks,