I'm browsing through Applications->System Tools->File Browser
My configuration:
Windows Server 2008 with Tftpd32 as Tftp-Server
IPs via Windows DHCP
Various machines in my network configured for PXE-Booting
Kernel and initramfs delivered through Tftp
Windows-Share mounted
Everything works fine so far.
Some other questions popped up

How to add support for NTFS?
How to add applications?
Unfortunatly I'm no Linux crack but I find PlopLinux very interesting to tinker with