This answer would apply if you are using a US version of Money 98: You may or may not have to go thru an intermediate version.
http://support.microsoft.com/kb/913108/en-us
If you are using a non-US version of Money, that would not apply. The following would apply in any case, such as if you were restoring your Money 98 file to the same Money 98 version that has been installed on a different compter:
When you do a restore, do not restore to the "default location". Instead Browse to your Documents folder, and choose a name. The old path (location) probably does not exist on the new machine.
Once inside your restored file, change the folders for the two kinds of backups to your Documents folder also.