it helps if you have 2 pages open, the one you're currently posting on and the one you want to add a link to.
so.................... have a look in the top left hand corner of the screen, just to the right of the 'back arrow', theres an address box.....
should have the page address showing...(for example this page address is http:// nightvisionforumuk.com/..blah..blah)
move your cursor over the box and right click.............................. and is if by magic a drop down menu appears.....................
now click on 'copy'................ your computer has now made a mental copy of the address
now come back to the page you're posting on............. start typing your text and wherever you want to insert your 'link', leave a space after the last thing you type, then right click
again as if buy magic another drop down menu appears..........................this time click on 'Paste', and your link will appear on the screen
hope this makes sense,
cheers jock