I'm trying to get my Amiga on the web, and it won't work, so I'm wondering if any of you can help

I have a GVP I/O extender which has a crossover cable (9pin to 9pin), and yes I have tried nullmodem, no help) so I run Miami (not Miami init which crashes on my 000) and set it up to use 8bit,1 stop bit, 19200bps, gvpser.device, DHCP. I have my Windows machine (Xp) set up with a 'Incoming connection' also set up 8 bit, 1 bit stop, 19200 (XON/XOF on both) and DHCP. I hit the online button (err connect can't remember exact word now all of the sudden) and it runs, it gets to this screen saying its trying to setup my ppp for lcp, then says it can't.
Should I be using SLIP? Is Windows set up right? Should I be doing something else? My amiga's looking so forlorn, it still has almost No software on it...