Unable To Create Folder Problem

I have a Dell Inspiron E1505 and I had to uninstall my intel video driver and reinstall it.  I went to support.dell.com and found the correct driver that i had to install.  It downloaded fine and it said it had to create a folder for it.  Though when I clicked Ok to create folder it says Unable to create the folder 'C:and then the file name.  I'm not sure what to do about this.  Any help would be appreciated.