i tried

pkgs <- c("pkg1", "pkg2", "pkg3")
install.packages(pkgs, repos = NULL,
+                 contriburl =
"file:///C:/R/packages/bin/windows/contrib/2.11",
+                 dependencies = TRUE)

i have put the zip files in C:/R/packages/bin/windows/contrib/2.11
 ***  and extracted the packages.gz file in this folder ***

It works. Thank you Peter.

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