Thanks twinhead but checked all those before, and device manager, and trying to format using command prompt arrrrghHowever trusting nothing I found some old diskettes, the ones I was using were new Emtecs dos formatted
nothing till the 3rd one which was part of an apple mac prog.
1st attempt got to 23% format then error
C:\Documents and Settings\bodger>Format a:
Insert new disk for drive A:
and press ENTER when ready...
The type of the file system is RAW.
The new file system is FAT.
Verifying 1.44M
Invalid media or Track 0 bad - disk unusable
....getting better 
then I tried command prompt
C:\Documents and Settings\bodger>format a:
Insert new disk for drive A:
and press ENTER when ready...
The type of the file system is FAT.
Verifying 1.44M
Initializing the File Allocation Table (FAT)...
Volume label (11 characters, ENTER for none)?
Format complete.
1,457,664 bytes total disk space.
10,240 bytes in bad sectors.
1,447,424 bytes available on disk.
512 bytes in each allocation unit.
2,827 allocation units available on disk.
12 bits in each FAT entry.
Volume Serial Number is 800A-2FEE
Format another (Y/N)?
yes please .........now all is well, it now formats and writes the new ones ok........ummm computers I will never understand them