if you want a regular partition you have to use fdisk utilitiy and it will wipe out your whole drive and you have to reinstall. search microsoft knowlege base for fdisk and it will tell all.
if you want to repeir dos files useing restore? i see! you have used dos backup and want to restore your compressed? backups but you upgraded and lost the program- right!
in my interpretation unless you have all the right versions of msbackup- patches they will not not restore.
i think its psooble to get the file from microsoft download center - i think they have a "file pack" which gives you all the files you need.
I will say agin. i don not believe it will work unless you hsave the excat verison of back up you had when you made them. 6.2 not 6.22 etc. then i think you will have to "rebuild" the dadtbase as you probaly don't have the index anynmore. it is easier to restore a non compressed verion i thnik. and it may be posible to restore them if uncompressed in diffrent verisons of back up like win98- have you tryied the rebuild feature in win98- i have not used win98 backup much.
if that failes maybe one of your frineds or someone online with backup can do it for you?
make sure you rebuild or use the search whatever and i think you have to have the excat version or they will not show up.
then stop useing old ones and make them with new version!