I would appreciate some help..... My new drawing of a small building has coordinates 0,0 at its bottom left corner. I am now trying to xref in a site plan, but the site plan has coordinates of 500,000, 500,000 ish. I think it is based on the UK national grid and my site is near London I tried the new - ucs command on the site plan to make it 0,0, but when xref'd in to my new drawing, the site plan disappeared. I also tried the AutoCAD help - but I don't know what question to ask!!!! Thanks in advance David