Good morning - back at this again!
Step by step: have both sites up.
On the bmwrt site have a new post open, switch to this site, go into thread I want to copy, right click on address which results in it being highlighted, choose copy.
Go back over to other site, click URL which opens a box in which to paste address, click ok and it's done.
Seems to work as long as I'm longed in to this site, but if logged out here, when link is clicked it takes you to a log in page, not to the pictures posted here that I want them to see.
The address being copied appears as this, minus the ***:
I'm going for 2nd cup of coffee now, just as a side note, got up early to get ready to meet some other riders about an hour from here, let dog out, let dog in and turned on spot lights - SNOW! So now I'm back at this, should probably just go back to bed!