That's strange ( talking of old pc's and old IL2 )
I just fired up an old AMD2600+ 1 gig ram Nvidia 4600ti XP pro SP3 (
giving it to the local pensioners day centre)
Installed IL2 Sturmovik I bought in 2001 for fun..............to make sure its all stable of course !!
Was amazed it had only the FW190 A4 and a bunch of Bf109's.
I had forgotten I bought it for the IL2 ground attack originally.
It ran smooth as silk too.
Had great fun in the old flight models especially the FW190 roll rate and awesome fire-power it had back then
If the pc's not too old then go for the 1946 version
I bought off e-bay recently a copy of IL2 1946 for £1 sealed up in its retail box as mine had become worn out.
.