Dear Professor Dick,

I have problems down load the reading materials at home. After I entered the
ID and password, this message came out:
Server error!

The server encountered an internal error and was unable to complete your
request. Either the server is overloaded or there was an error in a CGI
script.

If you think this is a server error, please contact the
webmaster<dickrp@northwestern.edu>.

Error 500 ziyang.eecs.northwestern.edu
Tue Aug 21 11:34:05 2007
Apache/2.2.3 (Linux/SUSE)

so can you send me a copy of the reading materials?
Thank you!

Regards!

Yours REN Ran

-- 
REN, Ran
Department of Electronic Engineering
Tsinghua University, Beijing, China
Mobile:  86-135 8168 0893
Tel:  86-10-8235 8293
E-mail:  renran.thu@gmail.com