On civilian casualties, I received the following list of sources by email recently (apologies for not linking the links - I'm lazy).
Iraq Body count - www.iraqbodycount.net
Findings: between 7784 and 9596 civilian deaths. More than 20,000 civilian injuries
The Iraq body count is a compilation of media reports. Likely to under-estimate total casualties, particularly those beyond Baghdad.
2) Human rights watch also have a number of articles regarding civilian casualties,
including an article claiming ?Northern Iraq: civilian deaths higher since war ended?
3) Finding total numbers of Iraqi casualties is much more difficult, as can be seen from the following Hansard references no official count was made,
1st sept 2003
Llew Smith: To ask the Secretary of State for Defence pursuant to the answer to the hon. Member for Central Fife (Mr. MacDougall) of 30 June 2003, Official Report, column 41W, on Iraq, if he will (a) examine reports of Iraqi deaths from eyewitness correspondents embedded with the military in the invasion of Iraq, (b) request the Coalition provisional authority to make a survey of deaths reported in hospitals in Iraq, from 19 March to 1 May, arising from military conflict and (c) make the estimating of Iraqi military deaths part of the aim of interrogation of Iraqi military commanders in custody. 
Mr. Ingram: ?.we are satisfied that the coalition did everything possible to avoid unnecessary casualties. We do not, therefore, propose to undertake a formal review of Iraqi casualties sustained from 19 March to 1 May.
Llew Smith: To ask the Secretary of State for Defence what his estimate is of the number of (a) Iraqi civilians and (b) Iraqi military personnel (i) killed and (ii) injured as a result of Operation Telic. 
Mr. Ingram: Whilst the Ministry of Defence has accurate data relating to the number of United Kingdom service personnel that have been killed or injured during Operation Telic, we have no way of establishing with any certainty the number of Iraqi casualties.
4) CIVIC (http://www.civicworldwide.org/surveys.htm) is doing surveys, but hasn't compiled results yet, AFAIK
5) A Zogby survey claims that 29.8% of those polled in southern Iraq lost ?a family member, neighbour or friend? as a result of the war. This survey can be found at;
There is also an article on the issue of the human cost of the Iraq war from the Observer. This is in two parts and can be found at:
Iraq the human Toll.