This repository is either down or gone for good. Use another repository. PPM::Repositories can set them up for you. Better yet, use cpan to install modules:
cpan XML::LibXML
If you don't have a compiler PPM can get one for you:
PPM MinGW
Unless you're running a 64bit ActiveState. They don't support 64bit well. See this chart. Better still, move to a sensible Perl distribution like Strawberry, comes with all the development tools you really need, supports cpan and PPM installation out of the box, proper 32/64 bit builds and stacks of modules already installed.
