hi eka
when buying a laptop you need to look for certain specifications
1.processor....most processors are dual or quad core now and even the dual core laptops can be found for less than £500,go for the intel core 2 duo,s or the amd turion x 2 processors
2.memory(ram) never settle for less than 1gb ddr2 ram,however most laptops come with 1 to 2gb of ram and this is more than enough for most users,however if they come with just 512mb dont worry,laptop memory is very cheap at the moment(£15 for another so-dimm memory module)and its easy to upgrade
3.hard drive..look for at least 100gb hard drive,this is the most common amount of capacity in hard drives in laptops
4.graphics..important>allways make sure you get a laptop with the graphics that you need,as you cannot upgrade the graphics in a laptop like you can in a normal desktop p.c,for a good gaming graphics adapter the radeon x1300 or radeon x1600 are good and the geforce go 7300 are good for gaming and other tasks
5.operating system....windows vista is the latest os,and go for vista premium as this is the best of all vista versions,try to avoid vista basic as it lacks the 3d aero interface and the clean looks of the premium version,or if you wish,demand a copy of windows xp on the laptop,manufacturers will still put windows xp on your laptop if you ask them
this is a rough guide of what to look for in a laptop,and here is two recommended laptops,both with good specs and good value
1Acer Extensa 5513WLMI 15.4" 1.66GHz Core 2 Duo T5500 1.6 Laptop from http://www.aria.co.uk/Products/Laptops/Acer+Extensa+5513WLMI+15.4%22+1.66GHz+Core+2+Duo+T5500+1.6+Laptop+?productId=28934
specifications....................................
56k fax modem ...Yes
Bluetooth ....No
Colour ....Silver/Black
Cpu type.... Intel Core 2 Duo T5500
Dimension..... (mm) 358 x 29.33 ~ 36 x 269 mm (WxHxD)
Graphics Intel ....GMA 950
Hard disk... 120 GB
Memory ...1GB (2x512MB)
Operating system ...MS Windows Vista Home Premium
Optical drive ...DVD Super Multi
Speakers... Yes
Weight... 2.77 kg
Wireless ...lan Yes
I/o 1 x 10/100 (LAN) / 1 x DC-In Jack / 1 x D-Sub / 1 x Line In / 1 x Line Out / 1 x Mic In / 1 x RJ11 / 1 x S-Video Out / 4 x USB 2.0/1.1
Cpu speed ...1.66 GHz
Screen size ...15.4" Wide
Resolution... 1280x800
Memory type... DDR2 533 / 667
Maximum memory capacity.. 4GB
2.ASUS X51R-AP076C Intel Celeron M-520 1.86GHz from http://www.aria.co.uk/Products/Laptops/ASUS+X51R-AP076C+Intel+Celeron+M-520+1.86GHz+?productId=27804
specifications.......................................
Card reader 4 in 1 memory card slot (SD/MMC/MS/MS Pro)
Dimensions 36.5 x 26.4 x 3.55 cm (W x D x Hl)
Display 15.4” WXGA (1280*800) active matrix
Hard drive 80GB
Main memory 1GB DDR2 667 DRAM; support for 2 x SODIMM socket for expansion up to 2GB
Operating system Windows® Vista™ Home Basic
Optical drive DVD & CD ReWriter
Software Symantec Norton™ Internet Security 2006 ; Adobe Acrobat Reader 7.0 ; NERO Express V6.0
Warranty 2-year limited global hardware warranty
Weight 2.8Kg
Processor & cache memory Intel® Celeron® M processor 520 1.86GHZ
Fax/modem/lan/wlan Intel® High Definition audio modem and 10/100 Base T PCI LAN on board Pass and support worldwide regulation IEEE 802.11b/g
Led status indicator Power / Suspend ; Battery Full / Charging / Low ; Storage access (ODD/HDD) ; WLAN enabling ;
Interface 1x VGA port (D sub 15pin) ; 4x USB 2.0 ports ; 2x Audio jack: Ear phone, Mic-in ; 1x RJ45 ; 1x RJ11 ; 1 x PCMCIA
Keyboard 19 mm full size 88key with MS-Windows function keys 2.5mm travel
hope this helps
good luck eka !