Thanks, she does a lot with photography also.
I would stay clear of a netbook for her.
Get a laptop.
64-bit vista, 4GB memory, 16GB thumbdrive combined with Vista Speed-Boost and a WD scorpio black drive http://www.wdc.com/en/products/products.asp?driveid=477
SSD are not 'better' because of speed but because they have no moving parts.
Lots of drive failures due to movement before heads get parked, SSD solves that problem.
SSD have a limited 'write capacity', they are just a big old flash drive and can only do so many 'writes' before they fail.
WD’s patented SiSMART technology is the industry's first early warning system,
able to self-monitor storage system usage and accurately forecast useable life
Big SSD is not cheap.
Use the 320GB listed above to replace the cheap 5400 rpm drive the laptop comes with.
Dell surcharges for the upgrades, do them yourself and save a bundle.
For the desktop...http://www.wdc.com/en/products/Products.asp?DriveID=503
Install a SATA controller if there is no onboard SATA.
A good cleanup of her old computer and add some ram along with the WD RE3 drive will bring the computer back.