plotting with multiple files

Hi !!
I need to generate plots from several multiple file and I am doing this 
by reading it as a list using c(file1, file2.....).
Since I need to either print the plots or save it as an plot image while 
generating  the plots in a loop, has anyone
done this before. Also is there a getchar() equivalent in R, I mean just 
to wait for an input from the console so that
I can print before it plots the next plot.
Thanks ../Murli