ICQ API Functions

Hi everyone,

I want to send a message to someone. I know in their ICQMAPI.dll there is two functions related:

1)ICQAPICall_SendExternal
2)ICQAPICall_SendMessage

I tried them several times but in fact i want to do the stuff externally (via ICQAPICall_SendMessage). Here my code:

declarations:
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Public Declare Function ICQAPICall_SetLicenseKey Lib "ICQMapi.dll" _
(ByVal pszName As String, ByVal pszPassword As String, ByVal pszLicense As String) As Boolean
Public Declare Function ICQAPICall_SendExternal Lib "ICQMapi.dll" _
(ByVal iUIN As Long, pszExternal As String, pszMessage As String, bAutoSend As Byte) As Boolean
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command button:
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Call ICQAPICall_SetLicenseKey("xxx", "xxx", "xxxxxxxxxxxxxxxx")
Call ICQAPICall_SendExternal(11111111, "Form1", "Some Message", 1)
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*)The first problem is the ICQAPI_SendMessage function works but the characters sent are totally wrong

*)The second and the most important problem is the ICQAPI_SendExternal function does not work. In fact I don't know the usage of this function parameters. I tried lots of thing to *pszExternal section but didn't work. Here below the C++ usage of it

C++ Code:
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BOOL WINAPI ICQAPICall_SendExternal(int iUIN, char *pszExternal, char *pszMessage, BYTE bAutoSend);
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Now please help about this stuff especially the ICQAPICall_SendExternal