am 28 now, & want to become a priest?

Depends where you go, there might or might not be one.

Here the upper age limit is 50 years:
http://www.dcpriest.org/am-i-called/becoming-a-priest/what-are-the-requirements-to-become-a-seminarian

I doubt you live in the US however. I suggest the ability to google and find the seminary you want to join. If you don't find that information on their website phone them and ask them.

I'm assuming that you're already a member of the religion that you want to become a priest for. Contact the office of the bishop where you live. The name of the official varies depending on the denomination - in the Catholic Church he's called the Vicar General. He'll tell you the options.

Go for it, your not too young

http://behind.ndandp.com/home/learn/qualifications-for-becoming-a-priest.aspx

i wan to become a priest. I never thought of uit before but recently i am think ing about it a lot. and i cant shake it out of my head. now a days all i think of becoming a prieast. i am 28 at present. i work for HSBC. but this banking carrear seams less atractive to me compared to the usefull life i can live. the only responcibility i have is my mother. who has canser & has given me all, i have to look after her its just because she is my responcibility but i love her. she deserves a good rest, i am not very good at it though but i do my best.

i want to become prieat and join seminary. i want to know the age limit to join seminary.

Then do it