hi what is the best software to convert svcd,vcd to dvd thanks for all your help in advance?

Here are several:

Top Free Media Converters for Windows

http://www.makeuseof.com/tag/top-free-media-conver...

SUPER © v2009.build.36

http://www.erightsoft.com/SUPER.html

Personally, I use the SUPER media converter and WinAVI

I use Cucusoft Ultimate DVD + Video Converter Suite converts DVDs and videos

Convert DVDs/Video to any video format , including H264, MP4, WMV, AVI, MOV, RM, 3GP, flv, SWF, mpeg1, mpeg2, VideoCD, SuperVideoCD, and DVD.

Convert DVDs/Video to any audio format , including AC3, AAC, MP2, MP3, MP4, RA, and WMA.

Convert DVDs/Video to any portable device including iPods (iPod video, iPod touch, iPod video nano), Zune, PSP, iPhone, Apple TV, PPC, PDA, PS2, PS3, and Xbox, and Xbox 360

try it http://www.record-streaming-media.com/dvd-converte...

If you want a free one:here have some info

http://www.dvd-video-converters.com/free-video-con...

It is totally safe,but maybe not good enough.

I got a better one,but need to pay,if you interest it,have a look.

http://search.yahoo.com/search?p=site%3Ahttp%3A%2F...

i recommend you to try Leawo DVD Converter. this dvd converter is an all in one dvd ripper. it can covnert DVD to AVI, DVD to MOV, DVD to WMV, DVD to MP4, DVD to 3GP, DVD to MP3, etc. if you want to try this wonderful DVD converter, you can free download it from here

http://www.google.com/search?hl=en&q=leawo+dvd+rip...

it must can help you, wish help and good luck!