hope fully , i bought my pentium m 1.6ghz with only 512mb ram and a 60gb hdd in jan for 360 and looking on ebay ppl are asking like 325 for one so you should be ok making £250-£300 easily
just a quick q how big is the hd
take a look a tthis opne , only has 512mb ramhttp://cgi.ebay.co.uk/Dell-Inspiron-6000-Laptop_W0QQitemZ190093812164QQcategoryZ177QQssPageNameZWDVWQQrdZ1QQcmdZViewItem