Hi tomerrouah, I noticed your profile and would like to offer you my project. We can discuss any details over chat.
We have old 2000 DNS and exchange server. Need to migrate and configure new DNS and exchange server nd migrate all exchange to new server. We have old citrix that runs in 2000 and some applications are accessed thru citrix we need to continue to support that as well. rest all should be migrated to latest 2012. Need to start asap and let me know if you think it will take more