605 wi fi, Hard drive Replacement

[Sittingbull]

Archos 605 wi fi. Hard Drive Replacement:-
I would like to replace my Hard Drive, Current ; Seagate (PATA) LD25.5 series. Type ST980210A 80GB, Part No. 9CV012-501. I believe this is no longer made or supported, is there a equivalent that can replace it, that can be purchased in the UK? Is it possible to get an increased capacity at the same time, although a direct replacement would be great. If anybody has any suggestions, I would be grateful since I think this unit when working, was very good. Regards