Do I need an SD-card to install downloaded APK packages?

I won’t receive my SD card this week, but already downloaded a lot of APK packages.
All instructions involve an SD card.
Answer #1
You can if your phone has an internal usable memory.
Answer #2
Yes you do..Unless if you use the market download which run the install after downloading..
For cracked software you need to copy the software to your phone memory card..
Simple instructions..After copying the Apk file to your phone mememory card..
Just use a filemanager..Any file manager…the buit in one will do..Browse..Tap on the APK file and the install screen will popup..
Answer #3
I used Dropbox, worked perfectly!