:salamext:
Milaad is a bid'ah (Innovation) and is not part Islam in any way or form.
The Prophet
saws1
said, 'Do not exaggerate my praise as the Christians exaggerate the son of Mary (Jesus). For I am just His (Allah's) slave, so say the slave of Allah and His Messenger.' (narrated by al-Bukhaari, 4/142, no. 3445; al-Fath, 6/551)
There is a detailed discussion about this here:
http://www.islamicboard.com/methodology/134265130-ruling-celebrating-birthday-prophet.html