Hi Tahir

I don't think you need the indexing service but you do need the CMO services. I've pasted some useful links about installing and configuring CMO that may be useful below.

David

Install/uninstall CMO manually:

Installing and configuring the aggregation service (written for previous CMO versions, but should be accurate):
http://world.episerver.com/documentation/Items/Developers-Guide/EPiServer-CMS/75/EPiServer-CMO/Installing-and-configuring-the-aggregation-service/

Configuring the Statistics Handler (written for CMO 2.0, but in general is accurate. I think browser definitions are not required now.):
http://world.episerver.com/documentation/Items/Installation-Instructions/EPiServer-CMO/CMO-20/Configuring-the-Statistics-Handler-in-EPiServer-CMO-20/

Configuring after the Installation (written for CMO 2.0, but most of the steps are accurate):
http://world.episerver.com/Documentation/Items/Installation-Instructions/EPiServer-CMO/CMO-20/Installation-Instructions---EPiServer-CMO-20-on-EPiServer-CMS-60/#postinstall

Uninstalling CMO (written for CMO 2.0, but most of the steps are accurate):
http://world.episerver.com/documentation/Items/Installation-Instructions/EPiServer-CMO/CMO-2-R2/Installation-Instructions---EPiServer-CMO-2-R2/#uninstall

Configuring EPiServer CMO Thumbnail Service on Windows Service 2008 R2 or later versions
http://world.episerver.com/Documentation/Items/Installation-Instructions/EPiServer-CMO/CMO-20/Configuring-the-Thumbnail-Service-on-Windows-Service-2008-R2/

Useful blog posts:

EPiServer CMO components and simple installation scenario (http://dmytroduk.com/techblog/episerver-cmo-components-and-simple-installation-scenario).
EPiServer CMO: advanced deployment options (http://dmytroduk.com/techblog/episerver-cmo-advanced-deployment-options).
EPiServer CMO in load balancing environment: simple scenario (http://dmytroduk.com/techblog/episerver-cmo-in-load-balancing-environment-simple-scenario).
EPiServer CMO in load balancing environment with separate editing server (http://dmytroduk.com/techblog/episerver-cmo-in-load-balancing-environment-with-separate-editing-server).