newbie question: call C function from R in Windows XP

Hello,

I need to call an C function MH.c in my R code in Windows XP. I downloaded 
the software form http://www.stats.ox.ac.uk/pub/Rtools/ and installed them. 
But when I run the command "..\bin\Rcmd SHLIB MH.c", I got message "perl is 
not recognized as and internal or external command, operable program or 
batch file". How should I do?

As a newbie, I just wonder if there is a setup file so I can install all 
the software I needed for compiling C code once and for all. Can someone 
provide me a comprehensive list for the installation? Thanks very much!

Lei


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