Seriously; first hit in googlehttp://support.acer-euro.com/drivers/no ... _1510.html
Searched for "Acer Aspire 1510 manual"
Hard disk upgrade
It is possible to replace your hard disk with a higher capacity drive
when you need more storage space. Your computer uses a 9.5mm 2.5-
inch Enhanced-IDE hard disk. Consult your dealer if you need to
perform a hard disk upgrade.
Get that screwdriver. Chances are it's just under a panel on the bottom of the laptop.