It was really nice to see the latest version of R Excel at http://rcom.univie.ac.at/ and bundled together in an aptly named package called R and Friends.
The look and feel of the package as well as ease of installing are really professional. I also liked the commercial equivalent at http://www.statconn.com/
However much older-guardians and die- hards of command line, feel that GUI is like putting lipstick on a pig, but we respectfully demur.
What does R Excel do? Well for one it can put the R Commander Interface INSIDE your Excel Spreadsheet. That makes it easy to use and a familiar interface even if you are newbie to R- (assuming you have done some Excel)
Download the latest version here
RAndFriends
This package will automatically install and configure
- R 2.11.1
- rscproxy 1.3-1
- rcom 2.2-1
It will also download and install a suitable version of the statconnDCOM server and of RExcel during installation. Therefore you will need a working Internet connection during the installation process.
This version of RAndFriends was created 20100516.Download RAndFriendsSetup2111V3.1-5-1
We also give you information how to download all sources for R and the R packages included in RAndFriends.
Also read a paper on R and SAS interoperability (using HMisc package from Dr Harrell) at Holland Numerics
http://www.hollandnumerics.co.uk/pdf/SAS2R2SAS_paper.pdf
DECISION STATS 
Hi,
first of all, I would like to thank to the creators of this useful program, I am using RExcel to conduct all needed analysis in my works..
I am trying to use library(drc) in RExcel to conduct regression analysis but i could not find a way to do it. Could you please help me?
Thanks,