If you are already using XP and wanted to upgrade to Vista you shut consider system changes also. if you are using desktop like upgrading Ram, Processor and maybe VGA. You have to even check some of your software which you already using in XP might not function properly in Vista. Do not buy from Jarrir or Office One go to soffitel 580.00 for Vista Ultimate.
If you are already using XP and wanted to upgrade to Vista you shut consider system changes also. if you are using desktop like upgrading Ram, Processor and maybe VGA. You have to even check some of your software which you already using in XP might not function properly in Vista. Do not buy from Jarrir or Office One go to soffitel 580.00 for Vista Ultimate.
My last advise XP is much more better then Vista.