Removing a line from an array

Hi,

I am starting to work with arrays and can't workout how to remove a bit of an array simply.

I have a list of products in a array and I want cut one out in the middle to array.

for example:

1) Starting with four rows:

Book1
Book2
Book3
Book4

2) Then remove row number 2 to get:

Book1
Book3
Book4

If anyone knows the a simple command to do this, it would be great,

Thanks,
Jimbo

[man]unset[/man]

Thanks