Probably not possible, but worth a try with the free PickMeApp (free only because it's in beta form). User manual click here.
MW is confirmed compatible with Win7 (32-bit click here & 64-bit click here), but if your new desktop is going to have 64-bit Win7, you'll not be able to do it.
In other words, one usually cannot transfer from a 32-bit OS (your old XP) to a 64-bit OS (your new Win7).
However, if PickMeApp has the option to transfer to any folder you choose, then choose the C:\Program Files (x86) folder on the Win7 PC to transfer your MW program to. This is where 32-bit programs are installed by default in a Win7 64-bit system, & might just work.
If it doesn't work, your options are:
- Use an alternative office program, e.g. OpenOffice click here, or
- Buy a new version of MW - a related Amazon search click here
- Buy a new/secondhand version of MW from eBay - a related search click here
Before buying, ensure the version works with your Win7 type. G