just a quick thought what is the service pack level of the XP install, I discovered a similar problem when trying to connect a XP SP3 or Vista SP1 to a XP SP1 or lower install.
I believe it is a problem with the type of authentication used. I'm no Microsoft tech but I think XP is expecting a plain text password but vista and seven will only send encrypted passwords by default. I might be wrong.
Make sure the XP install has SP3.
Or SP2,network works with SP2 too!
My Computer
At a glance
XP SP2Intel Celeron D 3.07 GHz1GBNvidia GeForce 6200 SE 256mb
- Computer Manufacturer/Model Number
- Fujitsu Siemens
- OS
- XP SP2
- CPU
- Intel Celeron D 3.07 GHz
- Motherboard
- /
- Memory
- 1GB
- Graphics Card(s)
- Nvidia GeForce 6200 SE 256mb
- Sound Card
- Realtek
- Monitor(s) Displays
- 17 "
- Screen Resolution
- 1280x1024
- Hard Drives
- 160GB
- Internet Speed
- 2mb