回复：请问聊天时的屏幕截图可以当作证物么？

您所問問題的答覆是應該可以做為證據，但是並不是一定可以，取決於審判庭的法官的最終決定，雖然Fed.Rules Evid.Rule 404(b), 28 U.S.C.A.; 18 U.S.C.A. § 2252A(a)(5)(B).
規定 Uncharged images and evidence concerning defendant's Internet activity was admissible "other crimes" evidence in prosecution for knowing possession of child pornography; the uncharged evidence was probative of defendant's knowledge and intent 但是關鍵在於 Government need to present sufficient circumstantial evidence of defendant's knowledge to support his conviction, (U.S. v. Maxwell, Oct 01, 2004 )所以在您的情況中，您必須要有其他證據來支持您的指控，在您的案件中因為您有其他的旁證，(保存了当时的汇款单和以前与他的账目来往)
所以您應該有一個很好的case
當然這只是老貓的看法，真正的情況還是得由當庭的法官決定。