new to BioEdit- help please

[bbsinfo]

Hello, all.
I am very new to software BioEdit. So please bare with my basic questions.
I want to use bioedit to compare pairwise similarity between two or more genes.
After selecting both genes, which tab shall i go to get the % similarity data i am looking for?

Is it under sequence tab--pairwise alignment?
Or I have to calculate a similarity matrix first?

please help

[bbsinfo]

and under sequence tab-pairwise alignment-calculate silimlarity/identity for two sequence
gives me a result:

Sequence 1: A
Sequence 2: D

Identities: 0.2212349
what does it mean, does it mean that only 22% of the sequence are the same?

The paper I read, they published similarity percentage data, between A and D, they are about 72% similar to each other, so i guess the identities: 0.2212349 does not make sence? please help?!! I am desperate. noone in my lab is using this software, there are soo many things I need to teach myself.