When you get the new hard drive and get an OS installed on it hook your old drive up as a slave and see if you can at least read some of it.
If not, hope you had a backup.
If not http://www.drivesavers.com/
We send out credit union clients who are too stupid to make proper backups there when all else fails. I’ve seen them pull data from drives that were 100% dead. Mega $$$ money though.