I've got the A+ and the Net+, and they definitely help with job hunting. But, if you just study for them and pass the exams, essentially making yourself a paper-tech, you'll just end up disappointing whoever hires you. So, get something set up at home that you can practice with. Theory + practical knowledge = you're golden, Poney Boy.
The A+ is probably the easiest cert out there; It's all hardware and basic Windows. You could study for it in a week or less with one of Mike Meyers' books. The Net+ is a good deal more difficult since it covers a pretty broad range of networking topics, but I had a blast preparing for the test. Basic networking concepts, like the OSI model, properties and characteristics of various cabling, physical and logical topologies, network devices, routing, protocols until your eyes bleed, WAN, wireless, security, administrative work, and tons of hypothetical troubleshooting... That's probably a relatively comprehensive list of things that you'll need to know. It's all pretty easy stuff, though. I would probably steer away from Mike Meyers if you take this one; I found his Net+ book to be marginally useful and mostly too watered down to be taken seriously.
I've heard good things about the CCNA that Goatboy mentioned, but you'll probably want to get the Net+ under your belt before going for any Cisco certs.
The CISSP, you'll definitely want to probably forget about for a long time. Not because of the material, but because of the requirements to even sit down and take it. I'd be surprised if anyone here met the criteria for it.