they run the anti virus?

File formats supported for viewing in Notes

IBM^® Lotus^® Notes^® supports a variety of file formats for viewing attachments. Notes contains KeyView technology from Verity for viewing attachments. The following formats are available for Microsoft^® Windows^® operating systems:

Applix Presents 4.3, 4.4	Microsoft PowerPoint 97, 2000, 2002 (PPT)
Applix Spreadsheets 4.3, 4.4	Microsoft Windows Metafile (WMF)
Applix Words 4.3, 4.4	Microsoft Word for Macintosh 98
Bitmap (BMP)	Microsoft Word for Windows 97, Office 2000, 2002 (DOC)
CCITT Group 3 Fax (TIF)	Microsoft Works 1, 2, 3, 4
CompuServe (GIF)	Windows Video (AVI)
Computer Graphics Metafile (CGM)	Paintbrush/DCX (multi-page PCX) (PCX)
Encapsulated Postscript (TIFF header only)	PICT and PICT2 Graphics (PCT)
Executable file (EXE)	Quicktime Movie (MOV)
Graphic Interchange Format (GIF)	Revisable Form Text (RFT)
HTML (HTM)	Rich Text Format (RTF)
JPEG file (JPEG, JPG)	Tagged Image File Format (TIF)
IBM Lotus 1-2-3 97 and 98, R9 (.wk4, 123)	Text file (TXT)
Lotus Freelance 97, R9 (PRE, PRZ)	WordPerfect 5.x, 6.x, 7.x, 8.x
Lotus PIC (PIC)	WordPerfect Graphics (WPG)
Lotus WordPro® 96/97, R9 (LWP)	XyWrite
Microsoft® Excel for Windows® 97, Office 2000, 2002 (XLS)	ZIP file (ZIP)
Microsoft Excel for Macintosh 98