Clicking sound in engine bay

For the last couple of weeks my eclipse rs 1999 has been making a clicking noise. When i first start the car i hear nothing but after it warms up i hear a clicking noise is pretty load and is getting on my nerves. So today i popped the hood to see if i could find where it was comin from and all i could tell was it was coming from the left side of the engine bay around the belt area. If anyone could help me that would be great i would rather know what it is then take it in and pay to get it checked out.

Check your power stearing fluid! Mine was low about a month ago and it was clicking like you were saying.