(1) So far as I can gather from the IfL (Institute for Learning) website http://www.ifl.ac.uk if you are currently teaching in FE colleges (funded by LSC (Learning & Skills Council, ie government)) you must register with IfL by 31 March 2008 -- no fee to pay.
(2) But if you teach (train, assist-teach etc) in other LSC funded institutions (say prisons, community education etc) you have til 30 September 2008 -- no fee to pay.
(3) OR, if you do NOT CURRENTLY teach in LSC funded institutions -- but who knows, you might! -- you have until 31 March 2008 to register with no fee to pay. After that date, fee is £30.
I'm thinking of writers and creative types who teach occasional part-time creative writing adult classes... so this would be category 3 if you are not currently in a teaching gig. Most likely you'd register as an associate.
As to what this is all about, see my 15 Jan and 11 March blog entries, the comment from Lindsay on the 11 March blog, and the links under Gov't Now Requires in the column to the right -- the official sites.
Strange breaks with Easter so early this year, are you and your students confused?