*ICQ Now Dialog - set:
1068 DIALOG 0, 0, 324, 1
- and -
CONTROL "", 2098, "{9F9012BA-E55B-11D3-ADE7-0090270D8F00}", 0x50000000, 2, 2, 0, 0

**Global Directory - Set:
CONTROL "", 1066, "{9F9012BA-E55B-11D3-ADE7-0090270D8F00}", 0x50000000, 3, 0, 0, 0

***ICQ Welcome - Set:
CONTROL "", 5161, "{9F9012BA-E55B-11D3-ADE7-0090270D8F00}", 0x50000000, 6, 6, 0, 0

You may also edit it as below. This simply removes the ad banner and "previous announcements" button leaving you with a small window and just the "close" button.

2080 DIALOG 0, 0, 110, 24
STYLE DS_SETFONT | DS_MODALFRAME | DS_SETFOREGROUND | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "ICQ Welcome"
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
FONT 8, "MS Sans Serif"
{
CONTROL "&Close", 2, BUTTON, BS_DEFPUSHBUTTON | WS_CHILD | WS_VISIBLE | WS_TABSTOP, 5, 5, 100, 14
CONTROL "&Previous &Announcements", 1001, BUTTON, BS_OWNERDRAW | BS_LEFT | WS_CHILD | WS_VISIBLE | WS_TABSTOP, 6, 259, 0, 0
CONTROL "", 5161, "{9F9012BA-E55B-11D3-ADE7-0090270D8F00}", 0x50000000, 6, 6, 0, 0
}

****Birthday Reminder:
There are two extra banners which i just set to:
CONTROL "", 1069, "{9F9012BA-E55B-11D3-ADE7-0090270D8F00}", 0x50000000, 68, 2, 0, 0
- and -
CONTROL "", 1070, "{9F9012BA-E55B-11D3-ADE7-0090270D8F00}", 0x50000000, 155, 2, 0, 0

ICQMusic.dll
138 - Retrieve Music Files
***********
ICQPlug.dll
8007 - Send URL Message
***********
ICQSearc.dll
2008 - Globaly Directory Search Engine
***********
ICQSMS.dll
159 - Send SMS Message*
171 - SMS Message Confirmation**
***********
ICQVoice.dll
138 - Receiving Online Voice Message
***********
ICQWP.dll
2001 - Send a Wireless Pager Message
**********************

*Send SMS Message (ICQSMS.dll)
You shouldnt need to edit this if you have already removed the ad using the SMS ad removal proceedure that is already on this website. When I edited it and removed the banner, I found that the "To:" drop down selection box had dissapeared, so I left this one as it is.