just a quick word to say thanks to everyone for helping but i am now giving up as i have changed everything suggested by balding_parrot and got no change!
quote: right ok
i have tried
A) downloading b2 final about 5-6 times
the first image was written to 3 different cds neither worked all with the checksum error
i checked the md5 on the iso of every download and guess what it is perfect!
i have tried all in total on 4 different desktops and 1 laptop that was on your compatability list as ok!
i have burnt it at 4x with the advised software!
i cannot see how it can be my end!
as a result i now give up on the bloody thing! lol
thanks for all the help and it is a pity we could not sort the problem!