altium dxp 2004 xilinx
i also have the altium livedesign evaluation kit. when i bought it, it came with the altium DXP SP2 and it had an XC3S400 FPGA. but now the evaluation kit comes with altium designer 6.0 and an XC3S1000.
in altium DXP you have the option to use the DXP synthesizer or the XST synthesizer (the one that is in Xilinx ISE). and you can also program the FPGA using Xilinx ISE.
if you are doing all your work in Xilinx ISE then after synthesis and PAR etc you will have to generate the .bit file and then click on IMPACT. it will easily recognize the evaluation board using the boundary scan. dont worry, your board wont be useless after the trial period of altium designer expires, you will still be able to do everything on it.
i hope that helps