comprehensive security regime

Hello all.

I am an independent small business operator, and as part of my preparations for further development in 2008, I have been undertaking an overhaul of my systems.

I am now turning my attention to backup and security.

I would like some suggestions as to what hardware and software [online & on-premise] I could consider that would provide me 'good-to-tight' security (backup, recovery etc). I am hoping for something that is both 'comprehensive', and at a budget suited to an enterprise of my size.

Any and all suggestions welcome.

Thanks,

ATP