The first type of scream may appear in the first part of the Hplay (kissing, massaging breast, etc.), but it leads only to the 2nd level of shininess. If it appears in the 2nd part of the Hplay it's usually followed by the 2nd type of scream, a faster paced one that will lead to the last level of shininess and preorgasm (that if this is the start of the Hscene). The 3rd scream is a louder one and it lasts only for 3-4 seconds or so and it's followed by orgasm. To make the girl advance to orgasm you have to pass a little time through all types of screams. So if the 1st scream is in the first part of the Hplay and you just wheel scroll up through it, in the 2nd part of the Hplay there may be only moans so do it step by step till you hear her change to moan, then come back to scream with wheel scroll down, than again up after a while to see if it's still a moan.