I would have to install Windows [and pay the cost of a complete install disk for it]  beside Ubuntu [free] on the new computer which has the hardware to handle Sims3.  

Frankly, it isn't worth buying Windows and doing a double boot for me. Ubuntu and Wine handle most of the needed programs I have from Windows except high graphics games.  

Besides 3 just isn't that interesting to me.  The old laptop handles most of the Sims2.  I'll keep it on that.