To find your Families Information Service in England use NAFIS Directory. Click Search Users (just below a box saying FIS in England on the right side of the page) and enter in your county/district. Or call 0800 2 346 346 from a BT landline.
No news yet on when the Direct.Gov website will be working correctly. The information on there at ChildcareFinder.Direct.Gov.uk is not accurate currently (especially the Immediate Vacancies field - everyone I've looked at says NO, when that may not be the actual case), though doing a search on there using your postcode may produce the local number for your Families Information Service.
I am trying to get the provider of the system to remove the Immediate Vacancies field (or display text like "please call") until such time that the new system actually works.