I'm not quite sure I follow you... are you saying that you want to view your HFS+ (Mac) partition from Windows on a different computer?
There are at least two things you can do:
1) Easier (I think) -- enable Windows file sharing, serve the disk to the Windows computer, mount it, and then copy the files over.
2) If your PC has Firewire, you can bring the Mac up in Target Disk Mode (hold T while booting), which will make it act like a Firewire external disk. You will then need MacDrive to be able to read/write to it.
Alternatively, you should address why the external drive doesn't work. There's no reason for this. Even if it's NTFS, you should at least be able to read it. The most likely reason is that you are using a bus-powered drive from a notebook -- try plugging it into wallpower and plugging it into the Mac.