how can i give music to limewire that i have?

How do you share? Put your music into a folder. Be sure you know the directory location of it. Then go to LW's Library window & then menu File>Add Folder to Share. Then direct it to where your folder is you wish to share.

how do you change a wmv format to mp3 format?

find a program on download.com to convert them.

It's best to save any music directly into mp3, not wma. These are compressed formats & each time you convert there will be quality lossed. wma = audio format, wmv = video format. mp3 = audio format. If your file is lossless wma format then it's safe to convert it to mp3. wma lossless will = about 1 min per 6 to 10 MB I think but not sure.

I guess it depends what your situation is. If you are downlding wmv files & wanting to convert to mp3 (& whether this is for others to share or so you can play them), or whether you are extracting music from a cd, converting to wmv & then wanting to convert to mp3.

One suggestion is QCD: http://www.quinnware.com/
Xtra plug-ins here: http://www.quinnware.com/plugins.php It will play or convert wma files to any other mp3 or ogg vorbis formats.

do those programs give viruses?

Certainly QCD doesn't give viruses or else we wouldn't recommend it. It's free!

Yep wma files can potentially incorporate viruses & other nasty things such as links to dialler sites, etc. But if the file starts off at your computer then you should be safe. I'd recommend you have an anti-virus program with up to date definitions for to check new downlds after they've completed downlding.

why doesn't the QCD let me install? the install button is there but it is not an option?

I don't think I had any problems installing it. Try closing all your other programs & trying again. If still not work .. dare I suggest it .. try rebooting & then try.