The link I provided was to address the issue of changes you mentioned.
The following link may be better for new users.
http://office.microsoft.com/en-us/assistance/HP010506231033.aspx
Visio 2002 was the first real release of Visio by Microsoft, the previous
release of Visio, MS Visio 2000 was a repackaged version of the last release
of Visio 2000 by Visio. In addition to some service patches, MS Visio 2000
included MS branding.
So with a real MS release, came the need for changes that brought Visio more
inline with the other Office products. So some of the short keys had to
change. It was not a radical change, because Visio has followed MS
guidelines since the beginning. (A light version of Visio 1 was included on
a Microsoft sampler disc and Visio was the first non MS product that used a
full version of VBA)
Microsoft is well aware of the fact that they dropped the ball on Help.
Visio is not the only product complaining that Help is hard to use, a
nuisance and incomplete. They are actively looking at solving the problem
forthe next release.
Though the combination of Visio Pro and Visio Technical into one product is
a good step forward, the abandonning of certain filters and stencil is a few
steps back. There have been a number of improvements to the shape model and
other tools (the addition of a macro recorder) that still make Visio 2003 an
excellent product.
John... Visio MVP
Need stencils or ideas?
http://www.mvps.org/visio/3rdparty.htm
Need VBA examples?
http://www.mvps.org/visio/VBA.htm
Common Visio Questions
http://www.mvps.org/visio/common_questions.htm