Time difference between PCC and Final

Hi, I appeared for 2nd group of PCC (which was only left) in May '11. PLz advise me should there have to be a time gap between clearing PCC and appearing in Final. Like in my case i wanna appear n May'12 for Final , so will I b able to appear . Bcoz i heard that there should b atleast a 2 yrs gap btw these 2 exams.

Thanx n advance.