Originally posted by Nazmul Huda Sarkar: what is .rar file...may be pdf...how to use it ?
Well, I suppose it could be anything, but back in my DOS days, I used to use a rar compression tool. I think there are winrar tools out there now and you could do a quick search on google (or your favorite search engine) and probably get a bunch of hits. Decompression is worth a try.