ACER ASPIRE SA306 RESTORE CDs

[Geoff]

I recently purchased an ACER Aspire 306 desktop computer.
On the advice of the instructions,I copied 4 Restore Discs on CDs.

When I tried to use them, the first 3 installed perfectly.
When I attempted to install disc 4,horror of horrors the disc was
blank,for whatever reason the disc hadn't burnt,

Now I can load 87% of the restore.Not having any luck with suppliers
at the moment (internet purchase)

Can anyone help please ? e.g. Copy of disc 4