"Old search" has long gone Aileen - and it took me quite some time to recover from same
At this direct link to 1901 Scotland
http://search.ancestry.co.uk/search/db.aspx?dbid=1101
Using what they now call the "updated search forms" - there is an address field at the bottom of the page
When I requested an exact match to 36 Morningside Drive Edinburgh I got "no find" removing the "exact" option (which I usually use because I otherwise get 100s of nonsense matches) I got many many matches BUT the ones at the top of the list are your address
Family living there is the Turner Family - Head Gardiner - a builder
Ah - the exact match works if I simply put 36 Morningside Drive in the address field - guess if that address existed in other parts of Scotland I would get multiple matches.
To get all the census records I use this link
http://search.ancestry.co.uk/search/group/ukicen - UK census collection
then scroll down the page if you want to select a particular census year and location (England, Scotland, Wales, Isle of Man, Channel Islands)
Trish