Using proper grammar and spelling on the forums would probably help aswell.
There's no such word as "aswell"
We don't normally allow people to "play grammar cop", but since the subject itself is about writing, I guess it's an exception. Even if English is your second language, if you want to work on an English language game then it's best to get as good as you can at writing in that language. There are, of course, other language versions of games - but I don't think you can get many Gaelic games.
An Irish gaming college? I go to uni in Ireland and I'm pretty sure no such thing exists unless you're doing a PLC or something in an IT.
Don't mean to put down game design degrees or anything, but I don't know of any proper NUIs here that actually offer that sort of degree, which would be something you'd want for yunno... a decent job.
You might consider studying abroad if there are no suitable courses where you are. Todd has actually spoken pretty highly of the game-related degrees recently, saying that they've improved a lot over the past few years. A lot of the devs at Bethesda did straightforward programming or fine art degrees, and quite a few of them went to Carnegie Mellon, which has well-regarded technology and arts courses.
One thing you'd need to consider is that game design is a very competitive industry - for every vacancy, there are dozens or even hundreds of applicants. You'd be working long hours under considerable stress, and you'd almost certainly earn more doing anything else because there's such a queue to get in it keeps the wages low across the industry. I've known people take pay cuts to transfer into the gaming industry - because they really, really, really wanted to work there. You have to want to do it more than anything else.
You don't just send in a CV and hope - that's true of any job - you have to network like mad and build up contacts. Go along to expos and trade shows and any way in that you can - volunteer on a stand to get in the door if that helps. Demonstrate that you really know games - read books on game design and practice modding and making your own rudimentary games. Quest design and level design are not the same thing - understand the difference between them, and understand the difference between different types of quest design. A lot of people start as interns, so that's a route in. Though a lot of people start off as QA testers and then move across into other departments, there's also a career path in software testing, so don't just view that as "a foot in the door" - there's already a queue to get that foot in that door, and it's a skilled job. It's absolutely
not "playing games for a living", much as I might tease certain people that it is. You don't get to keep your character!
Really, just remember that for every person applying who's a pretty good modder, there are five more applying with good related degrees, a huge portfolio of work they've spent 12 hours a day on, a little black book full of industry contacts and experience in a related field. All of that is just a matter of putting the time in.
Oh, and you'd need to move to America, of course - unless you want in on the marketing/distribution side and then you could apply to Zenimax Europe.