I am having a problem to attach files on my post and also on PM. Please anybody, let me know how to do this. TIA.
You cannot attach files to PMs. You'll need to upload them elsewhere and include a link in the PM. For posts, you have an attachment option on the write post page, towards the bottom. I used it without problem just a few days ago, but I know yesterday we were having some database sluggishness. So if it isn't working, try again a bit later (might be the database again). If not, post or PM a mod with the exact errors you're getting.