We did all the work ourselves in-house, apart from configuration of SAN's etc.
MS EES Agreement, Enterprise Clients, Server 2008R2 Hyper-V hosts, 2008R2 Native Domain, and System Centre Enterprise Suite to manage Win7 Enterprise clients.
SAved us £40K plus on what RM wanted to charge for a move from CC3 to CC4.
Now costs us approx £8K per year for MS EES agreement.
Bare Metal to working desktop, with all applications installed, 40mins on a Core2Duo, 30minc Core i3.
If you don't want to do it yourself, nViron in Runcorn are very good.