ASIC/FPGA programming

Hello
I've done some work in ASIC Verilog design, but not that much in FPGA 
design. SO, I wonder what are the mani differences between these 2 types 
od design. I found a multimedia document about this on Xilinxs website, 
but I cannot read it on my Linux box. Do you know a web site which could 
give me a brief overview of the most important differences?

By the way, I thought it was possible to download Xilinx 6.1 for free on 
their website, but I dind't find the link.

Thank you

>
> By the way, I thought it was possible to download Xilinx 6.1 for free on
> their website, but I dind't find the link.

I believe it's Xilinx ISE Webpack that's free. Here is the link
http://www.xilinx.com/xlnx/xil_prodcat_landingpage.jsp?title=ISE+WebPack

Jim Wu
jimwu88NOOOSPAM@yahoo.com (remove capital letters)
http://www.geocities.com/jimwu88/chips