I have 512MB RAM which, while not massive, is plenty to run XP and the various apps I choose to run, so I don't think a lack of RAM is the problem. I will install the latest version of OA and let you know if my system still feels sluggish. If it does, I will take you up on your offer. Like I said, your support is second to none! BTW, would I be correct in thinking that the whole of OA is coded in C# and so uses the .NET library ? ... or are speed critical parts coded in ASM/C/C++ ?