Converting Scenery

Does anybody know how to convert custom scenery you download into the game? Or how do you get that question mark icon in your scenery area and then just put random scenery? This would really help a lot of someone helped me. [:)]

Assuming that you're referring to RCT2, any .DAT file that you download as either scenery or a custom ride should go in your OBJDATA folder in your RCT2 folder. This will allow you to create a new landscape/scenario that contains those items. No matter what, these new items WON'T show up in already created landscapes, scenarios or saved games without you modifying them.