below are the dell specs, it's £411 without a dvd-rw and £515 with.
Dont forget that if you have WLAN you will need a wireless router.
this is the cheapest that ebuyer do with the requested specs
hxxp://www.ebuyer.com/customer/products/index.html?rb=12514303272&action=c2hvd19wcm9kdWN0X292ZXJ2aWV3&product_uid=92194
they also have one in the clearence section currently at £484, watch this one it may tumble in price, although there is always a risk buying from this department.
Base Intel® Celeron® M Processor 360 (1.40 GHz, 1MB L2 Cache, 400MHz FSB)
Microsoft Operating System Genuine Windows® XP Home Edition, SP2
Memory 256MB 333MHz DDR Memory (1x256 in base)
Keyboard Internal Keyboard (UK/Ire)
Hard Drive 60GB (5400rpm) IDE Hard Drive
Modem Internal 56K v.92 Capable Fax Modem
CD/DVD Drives 8X DVD+/-RW
Wireless Local Area Networking Dell Wireless 1370 802.11b/g Mini PCI Card
Shipping Documents System Documentation
Gedis Bundle Reference List N11225 - DHS 2200 Good
Microsoft Application Software Microsoft® Works 7.0
Standard Warranty 90 Day CAR Service
Cover It with Dell Support Services Basic Lite 1Yr At Home Support + 30 day access to Multi Media E-Learning
Use It with E-Learning MS Windows XP Beginner - 60-day license - English - Go to
www.learndell.com/euro to register
AntiVirus & Security Software No security subscription
Power Supply 60W AC Adapter
Dell Photo Album Photo Album™ SE Basic- basic photo management with 60-day trial of Premium features
Paint Shop Paint Shop Pro™ Basic Edition - 60-day trial version
Order Information Inspiron Order - UK
Primary Battery 8 Cell 43WHr NI-MH Primary Battery
Carrying Cases No Carrycase
Dell Media Experience Dell Media Experience 3.0 Basic- Inspiron
Adobe Reader English - Adobe Reader 6.0
Promotions Hidden Option Class Promo Hard Drive Ugrade 40GB (5400)-60GB(5400)
Dell Internet Order Dell Internet Order.
LCD 15.0 inch XGA LCD Panel
TOTAL Incl. VAT:£514.86