手提電腦硬碟得20G 想自行upgrade 唔識(20分!)

我部手提電腦(DELL INSPIRON 710M)硬碟得20G,我想自行upgrade但係我從來都未試過裝野落手提電腦(淨係同台機換過ram),所以有d問題:

1.)我部手提電腦可以upgrade harddisk嗎?
2.)我部機好似係用一種叫 Ultra ATA hard drive既harddisk,唔知係唔係要dell得其他牌子都得?

3.)我搵左d yahoo拍賣harddisk,唔知可唔可以裝落我部notenook?
~http://hk.f2.page.auctions.yahoo.com/hk/auction/b12433305
~http://hk.f1.page.auctions.yahoo.com/hk/auction/1120629067
~http://hk.f1.page.auctions.yahoo.com/hk/auction/1120631416

4.)如果到時真係買左harddisk,咁點樣拆開部手提電腦,仲有點樣裝落去(插響邊?有冇線要搏?...)還有要唔要改config等等要注意既野

:D十萬個多謝!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!THX!!!!!!!!!!