reet, welcome to the forum, let be the first to say welcome, before someone else jumps in and says burn it.
(ongoing problem on this forum)
Now the above is out of the way, lets deal with your problems one by one.
hi im new here so first hello
ive just bought a 2000 v 1.8 freelander and could do with some advice
the propshaft is missing & was wondering if they are all the same, also only one key & fob keys not a problem as i can get one cut but where can i get a fob programed in wrexham northwales. ill get a fob from ebay. any help will be welcome
1) as you probably already know, 1.8 isn't the best engine choice, but if the head gasket has been changed, and as long as you a religious about checking coolant levels every week, or better every day, you will be doing as much as you can to avoid some of the complications of head gasket failure. Not much you can do to prevent the head gasket going when it decides it's time, but you can minimise the damage.
2) the missing prop shaft is a slight worry, and is usually done to disguise a failed VCU and/or failing IRD. Was it a private sale or from a trader ? If it was trade,you have good grounds for taking it back and asking for the prop to be fitted. Effectively, by removing the prop there is no drive to the rear wheels, and it is not therefore 4 wheel drive. Maybe not a problem to you, (search the forum for mondo mode)
3) The key may have a transponder in it, which would need to be coded to the car. Normally, Land Rover dealers would have to do it with test book, but there are a number of auto locksmiths which claim to be able to do this for you. Never had to do it, so can't speak from experience.
4) Similarly with the fob. You can re-synchronise a fob by pressing the buttons 5 times in quick succession, but not sure if this would work with a fob which wasn't coded to the car.
good luck.