i want to download a file with .3gp extension from raphidshare , can i guarantee that it is free of viruses?

This popular DVD Ripper for Mac can decrypt DVD to all popular video and audio formats on Mac OS. It is powerful and it can rip DVD video to all sorts of video files as well as being capable of extracting DVD audio to various audio files on Mac OS.Cool All Video to WMV Converter provides the variable expert options to the user for controlling the specification and quality of outputting, and an easy-to-use interface allows you to finish the conversion task easily.
You can have a try–Aiseesoft 3GP Video Converter

FLV converter for Mac is a simple tool, which helps you to convert FLV videos to other video audio formats under Mac os X system.

It can convert MPG, MPEG, MPEG2, VOB, MP4, M4V, RM, RMVB, WMV, ASF, MKV, TS, MPV, AVI, 3GP,3G2, FLV, MPV, MOD, TOD to 3GP video format.
Windows movie make only support WMV video format. If you want to import other videos to it, you can use an extra tool to solve this problem. I had a video converter called 4Videosoft Video Converter Platinum. It can help me to between any video formats including MPG, MPEG, MPEG2, VOB, MP4, M4V, RM, RMVB, WMV, etc
With the converted videos, I can do anything I want.
Just have a try and i hope it can help you.

Mod Converter for Mac is the easiest to use mod video converter on Mac OS. Convert yout mod file to video like MPG, FLV, MP3 automatically.

You may try AVS Video Editor which has many great functions. The features in the official site are below:
1. Direct Transfer to iPod, PSP, Mobiles and Other Portable Players
2. Supports Virtually ALL Video Formats
3. Burn Movie DVDs
4. Capture and Edit Video from External Devices
5. Edit Video and Enhance Your Movies
6. Create Slide Shows
7. Make Perfect Audio for Your Video Editing Tasks
8. Scene Detection
9. Convenient Video Editing Tools and Interface
Windows movie maker support WMV Format

Tod converter for mac is the simplest and practical program before you edit .tod files in iMovie or FCP. It enables you convert .tod files to other regular video formats like mov, mpg, dv, 3gp that definitely supported by iMovie and FCP.

Cool All Video to WMV Converter is a powerful WMV video converting tool which is easy to convert mos video. Its standards-based encoding algorithm ensures that the output video has the best quality. It supports converting AVI, WMV, MPEG, MP4, ASF, VOB, 3GP, iPhone, MOV and FLV to WMV video.
FLV to AVI MPEG WMV 3GP MP4 iPod Converter you can try, it is a professional FLV converter software which can convert Flash Video FLV to AVI, FLV to MPEG, FLV to WMV, FLV to MP4 format.
It also supports convert FLV file to popular video formats including AVI, MPEG, WMV, DivX, Xvid, ASF, 3GP, MP4, iPod, PSP, Zune and convert FLV to audio formats MP3, WMA and WAV.