|Cannot find any reference to a Presario 1200T so I think you might not have listed the correct model number. Unless it has more than the basic 32 or 64 mb ram that the 1200 series originally shipped with then you are on a fool's errand here.|
Is this the Staples offer you are looking at?
If so then this condition: "Offer valid 10/10/10 - 12/25/10. To qualify for $100 trade-in savings, trade-in computer must have original Windows® XP, Windows Vista® or Windows 7 operating system"
The operative word in that is original. In other words, the trade-in computer must have originally had either XP or a later version installed from factory. They will not accept your old clunker even if you somehow get XP onto it.
Nice try but there's no point pursuing this any further.
Goin' Fishin' (Some day)