Deleting entries, primary key holes

[hiltonchim]

Hello, I have one simple table that looks like this:

create table Tech(
techID int not null auto_increment,
techName varchar(50),
techDescription longtext,
techOriginal text,
techThumb text,

primary key(techID)
) engine = innodb;


Whenever I delete an entry in the middle, it leaves a gap in the primary keys sequence. I want all the primary keys for each entry to adjust itself every time I delete an entry so that the primary keys starts from 1 to n with NO holes in the sequence. How do I do this?

Thanks in advance.