Have anyone tried IIS6 with RoundCube?

[chome]

Hi,

I have extracted roundcube to this folder on my IIS server:

C:\Inetpub\wwwroot\roundcube\


I changed the "Home Directory" in IIS of this website to C:\Inetpub\wwwroot\roundcube\ so that whenever user wants to access he just keys in eg http://mail.company.com instead of http://mail.company.com/roundcube.

The roundcube works but somehow i found that the display quota bar image can't be loaded, and i dont really know why. If i change the "Home Directory" to C:\Inetpub\wwwroot\ then it can work again.

Anyone knows why is that so? DO i need to modify the roundcube configuration?