Hi Kingskawn, 
  
So if I understand correctly, SCCM will sysprep my XP-machine, instead of sysprepping it myself. Please correct me if I'm wrong. 
* DHCP-server : up and running. The IP-range is defenitely within the boundaries. I've made 15 reservations for DHCP to use in case of a PXE-request. I do need to put the MAC-address of that machine in the DHCP-server as all our computers have fixed IP-addresses and some people here have a laptop that they take home. So those machines have an alternative IP-configuration, what makes that I need to put invalid MAC-Addresses for the 15 addresses I've reserved in DHCP, if not they'll get an IP-address from the DHCP... 
I'll have to check the port-settings, but as I understood there is no configuration of ports needed if the DHCP server is on the same machine as the SCCM server... 
*WDS started on the server 
*Correct drivers for the xp-machine. The XP-machine is a functional XP Pro SP3 machine. It has all the drivers it needs to connect to our network (it is running in our network as we speek). So I presume that there is a correct NIC, right? 
Cuz I need SCCM to capture this machine and sysprep it so I can deploy it afterwards. And eventually add some drivers so I can use this image on other HAL's. 
  
Or if someone could point me to a log I should check? 
  
(PS : FYI. In the past I used the same IP-addresses in DHCP for my WDS-Server, and there was no problem PXE-booting any client in our network. That's why I'm a bit lost here. I'm sure it will be something simple, a stupid setting or a mark I didn't put somewhere ...) 
  
I hope it's a bit clear to you, English is not my native language, I do my best. 
  
Thanks again!