Sajjad,
First of all where did you first applied for SEGS now IGS read go to this link
http://www.workingintheuk.gov.uk/workin ... cheme.html
Find the form VAF1, since you are not in the UK, I do not know your circumstances why you were refused because you can only apply for SEGS/IGS one year after you graduate I do not know if this rule has changed now if it has been 1 year since you graduated well you will be refused.
Well the visa is a permit free one, which means you can work anywhere in the UK for anyone without a work permit but for only 1 year.
Hope that information is ok for you.