Hi I plan to use the Rmetrics package in a software tool for risk management written in C. I have some questions regarding embedding R: 1) Can someone elaborate more on R_tryEval? a) I was looking at the Rpackage.c example under the testing/Embedding folder. I vaguely understood that R_tryEval is used to interactively call R commands and invoke a package. I'm still not clear on how one should exactly go about doing this. What parameters doest R_tryEval take and what is it actually trying to do? 2) How can I convert C data types into R data types? a) I plan to write wrapper functions which take in parameters as doubles or ints. How do I put them into a SEXPREC? b) Also how do I get back the results of the R commands from R_tryEval into regular C data types like int, float, double? 3) On Windows, how can I bundle Rmetrics along with my application? What DLLs am I looking at bundling and where should they be located? Thanks Abhijit [[alternative HTML version deleted]]