If the issue is lack of install CD for the programs, there is another possible workaround. Not elegant, but functional. It requires you have a license key for the older OS and a install CD for the older OS.
The is called a "Hack", but it is not contrary to the copyright and EULA. If the old computer is not usable, and if you have a valid product key, Thee is a painful way to port the older OS onto you new computer and make a dual-boot system. You need a spare hard drive to do some testing to see if it will work for you, In fact, two spare hard drives. you need a backup also.
In general, getting an old hard drive is cheaper than t getting another computer by far.
Remember., I said this is a "Hack" and you are better off if you can find the install CDs for the programs. If you have the license key for a bit of software, it is legal to install it using a CD you borrow from a member of .you local computer club. The big issue is if you are the owner of a license key for the software.
Now as for the "Hack". You install the older OS on another parson. Get is to work. Slave the old drive. make a backup of the Old OS from he old drive. Now do a restore from the backup to the new install of the old OS on the new computer. It will fail to boot right. Now repair the thing with the OS CD.
I said it was a "Hack". Wanda go for it.? Don't blame you if you don't like the "Hack". I don't either. In think it is easier to repair the old computer of replica it.
Otherwise, most programs must be install into an OS. Few exceptions. The dual-boot "Hack" is a last resort.