Mongoloid Cow said:
Athens and Sparta did not take part in the Trojan War. It took place sometime around 1250BC... Sparta wasn't built until about 750BC, and Athens wasn't independent until after the Dorian migrations. The Greeks which did were Mycenaean, and a few Cretan ones. Modern archeological evidence suggests that Troy was only a province of the Hittite Empire with a large amount of circumstantial evidence for this to be the case.
But if you need civs, to keep in touch with the Iliad, here are some suggestions, some of which will be shot down but I give them anyway...
On the Trojan's side
Troy (obviously)
Dardania (in the Iliad they are mentioned as Trojan allies, in history they are mentioned as Hittite subjects even taking place in the Battle of Kadesh against Ramesses II the Great of Egypt)
Kikonia (in western European Turkey and far northeastern Greece)
Leleges (if possible to represent... they were nomads who dominated the centre of the Aegean Sea, after the war they migrated to Turkey)
On the Greek's side
Mycenae
Gortyna (to represent those Cretans which joined in the war)
Those who were / could be Neutral
Crete
Hittite Empire (better not let them get involved because they would probably be too powerful, they had significant cities in Miletus and Ephesus)
Illyrians (barbarians from Yugoslavia and northern Albania. They were just beginning to emerge although they could be represented by barbarians)
the isnt just directed at you Mongoloid, it has alot of just general points 
A)int he Illiad, BOTH Athens and Sparta participated in the war- interestinglly, it is the Athenians who are noted for thier superb troops, and militaristic life style...
B)IIRC, Knossos was still the major site on Crete- it should be the cretan palaces that are the major cities.
C)IIRC, Crete was, accroding to the illiad, unified, and did not partcicpate in the war, though the prinice (Idomenus IIRC) sent agamemnon a faboulous suit of armor
D)the Mycenaeans shoudl be split into different city states, with different UUs- for instance the Myceneans could get a prot hoplite (considerin it was in the area of the argolis, the area in which Mycenae was located, that hoplites were developed)and other like, take the Pylians would have a chariot UU (as Nestor, King of pylos, repeated wanted to fight a the main battle with atraditional chariot charge, instead of using chariots as transporation, and nopt real battle platforms)
E)perosnally, I think troy was more along the lines of a dependent ally then a vassal, or province of the Hittite empire- although egyptian records record a contingent of Trojan chaiots at Qadesh, and the Illiad records Hittite troops at Troy
a final note
I have to say, because of the drive of characters inth eIlliad, a trojan war scenario is going to be hard to make other then the politics behind...