Not sure how I can help you. The price of SH4 is pretty cheap now. If you do decide to buy it again I would suggest you buy Silent Hunter 4 with U-boat Missions. This is version 1.5 and most the mods made for SH4 are made for version 1.5.
Check around and I think you will find Silent Hunter 4 at a good price.
high i need some help i have recently sold my laptop and it had my wolves of the pacific 4 cd in it i have not been able to play my favorite game can you please help