Errors occured while performing Database-Attach Migration

While doing a testing database-attach upgrade from SharePoint 2007 to 2010 I came across some errors.
I was following the steps in Microsoft Technet website and when I was going through database reattaching process I came across several errors and one was like this.

 I found out that I had mixed up the names of the servers I was using. But then there was an error regarding accessing to database.

When I went through some articles in the internet I found out that it was due to the current user not being added to the SPShellAdmin group. This issue can be resolved using this method.

Then again (!) there was another error regarding version incompatibility.

I'm trying get an hotfix for this and rehearse the procedure again.
Today there was a request for a presentation for our head to show to the management, so I had to attend to it with our team :) I will be posting about the updates on these issues!

Setup errors encountered while Installing SP 2007 in a VM

 When I was trying to install SharePoint 2007 in a Virtual Machine for testing purposes I encountered several problems. Thought of documenting it down to help the wanderer!
 The setup I was using was a Windows 7 64bit machine with 6GB RAM and the virtual machine was Sun Virtual-box. I had setup Windows Server 2003 x64 and SQL Server 2005 was also installed.
 When I tried to run the SP2007 setup the setup gave me the following errors.

• IIS 6.0 not installed

This can easily be solved  by going to add/remove windows components in the control panel.

• Windows Workflow foundation not installed

 This was an error which occurs due to .NET framework 3.0 not being installed. You can find the .NET 3.0 here.

• ASP.net feature missing

This is the tricky error! In order to resolve this you need to first install .NET 2.0 framework and configure these steps.