Hi Padma,
That is not too unusual. Once they got to 12.0 and put it on the NW platform, it started getting too complicated for consultants who only do it once every 6-12 months. They did make it easier in 12.1, but it is still better to have Basis folks doing it.
The last time I did a full MII installation and configuration was January 2007 (I think) in an early release of MII 12.0. I sometimes miss the days of 11.5 as the installation and configuration typically was fully complete in 45 minutes or less.
Cheers, Mike
SAP Rapid Innovation Group - RIG