Your question is not clear. What do you mean by settlement visa? If you have leave to remain until 27th Jan 2011 and will be qualified for ILR by that time, then you have to wait and apply within 28 days before the expiry of yr last leave to remain. If you apply too early and you are refused for any reason, you may not be given a right of appeal because you will still have elave to remain at the time. So wait.