Need help selecting a laptop

[FortFunFoSho]

Can someone lend some input on these as I do not know much about processors these days:

HP 530 - Celeron M 410 1.46 GHz - 15.4" TFT
Celeron M 410 / 1.46 GHz - RAM : 512 MB - HD : 80 GB - CD-RW / DVD - WLAN : 802.11b/g - Vista Home Basic - 15.4" Widescreen TFT 1280 x 800 ( WXGA )
MFG#: GH635AT#ABA - $550

HP Compaq Business Notebook 6715b - Mobile Sempron 3500+ 1.8 GHz - 15.4" TF
Mobile Sempron 3500+ / 1.8 GHz - RAM : 512 MB - HD : 80 GB - CD-RW / DVD - Gigabit Ethernet - WLAN : 802.11b/g - TPM - fingerprint - Vista Home Basic - 15.4" Widescreen TFT 1280 x 800 ( WXGA ) - Smart Buy
MFG#: RM171UT#ABA $569

HP Compaq Business Notebook 6515b - Mobile Sempron 3500+ 1.8 GHz - 14.1" TF
Mobile Sempron 3500+ / 1.8 GHz - RAM : 512 MB - HD : 80 GB - CD-RW / DVD - Gigabit Ethernet - WLAN : 802.11b/g - TPM - fingerprint - Vista Home Basic - 14.1" Widescreen TFT 1280 x 800 ( WXGA ) - Smart Buy
MFG#: RM184UT#ABA $599

HP 530 - Celeron M 420 1.6 GHz - 15.4" TFT
Celeron M 420 / 1.6 GHz - RAM : 512 MB - HD : 80 GB - CD-RW / DVD - WLAN : 802.11b/g - Vista Home Basic - 15.4" Widescreen TFT 1280 x 800 ( WXGA )
MFG#: GU330AT#ABA $499



What do you think?