Grape Vine From Aldi - Help Anyone?

Can anyone give any advice re. growing grapes... On the spur of the moment I bought a grape vine plant from Aldi, but not sure what type it is or what to do with it.
I've read a few posts from other people and the general thing seems to be planting them in the ground and train them through a hole in the wall of the greenhouse and then along the roof.
My problem with this is my plot is on a slope and the greenhouse is built up from the trench immediately in front of it, which is the perfect place for it, south facing and deep fertile ground.
The hole I have already in place is between 24"-30" from ground level, would that be a problem or will a vine manage this with ease?

ANDY
I grew a grape vine as you suggested but mine was planted on the north side of the greenhouse which gave the roots a bit more shade so the ground didn't dry out so quick, once the vine had filled the greenhouse it got all the sunshine it needed

I've got one in my greenhouse.  Its on the back wall (on the west side) and I planted mine straight in the ground, so the roots by now will be outside.  I've had it in for 3 years now.  The first two years, you don't pick the grapes, and then after that, you can (this is my third year, and I've got loads of grapes).  Anyway, in its first year of growth, in, say, November, cut it back so that its a couple of feet high, and the next year, you do the same, cut it back to about 3ft in the November, and then let it grow, just cutting off the lateral branches, so you only have two main branches growing, and just train it to go along the top of your greenhouse.

Whatever you do though, never, ever, water or feed it as all the goodness will then go into the leaf growth and not in your grapes.

And as its on a slight hill, if you see ALL vineyards, 99% are on hills

You could always consider growing the grape outside as this sounds a great location for a vine 

LOL... would it not be too cold way oop North?

sooooooooooo.... in answer to the last part of my question  would I be able to train my vine from the soil level (30" below floor level) up and into the greenhouse thru the hole in the wall?

sooooooooooo.... in answer to the last part of my question  would I be able to train my vine from the soil level (30" below floor level) up and into the greenhouse thru the hole in the wall?

Yes, you certainly could. You might find it grows shoots off outside... just ignore them until pruning time (early autumn ) and take them out then.

Thankyou everyone for all your valuable comments, I feel much more confident about it now