There are apps already made for your convenience. Try searching "Portable Apps" with google. I have some of these on my Flash drive already. Here is my list of applications and size: 1004 KB------ 7Zip 4.32.exe 6475 KB------ Abiword 2.4.5.sfx.exe 1610 KB------ Ad-aware-se 1.06.exe 1756 KB------ Alcohol 120 v1.9.5.3823.exe 1282 KB------ Auslogics Disk Defrag 1.0.exe 1318 KB------ CCleaner 1.31.exe 6205 KB------ ClamWin 0.88.4 MB.sfx.exe 593 KB------ DVD 2one 2.05.exe 1084 KB------ Dvd Fab Decrypter 2.9.7.7.0.exe 1299 KB------ Dvd Region+css 5.9.exe 1833 KB------ Easy DVDCD Burner 3.0.76.exe 3581 KB------ Emule 0.46c.exe 1552 KB------ EssentialPIM Pro Portable v1.6.exe 3845 KB------ Everest Home 2.20.exe 2276 KB------ FileZilla 2.2.23a.exe 7949 KB------ Firefox 1.5.0.4 + Extensions.exe 5869 KB------ Firefox 2.0 beta 2.sfx.exe 5530 KB------ Firefox v1.5.0.6.exe 2303 KB------ Flash FXP 3.20.exe 1766 KB------ Flash Player 3.0.exe 1297 KB------ Flashget 1.71.exe 1542 KB------ Foxit Reader 1.3.exe 9264 KB------ GAIM 1.5b3.exe 1833 KB------ GetDataBack 3.03 For Fat.exe 1804 KB------ GetDataBack 3.03 For NTFS.exe 10735 KB------GIMP 2.2.11b.sfx.exe 1335 KB------ Hide Ip Plantinum 2.91.exe 12631 KB------Internet Explorer 7.sfx.exe 14083 KB------Kaspersky Antivirus 6.01.exe 4437 KB------ LimeWire Pro 4.12.3.exe 6972 KB------ Msn Messenger 7.5.exe 12538 KB------Nero 6.6.1.4.exe 12239 KB------Nero 7.2.0.3.exe 8873 KB------ Nod 32 Antivirus 2.51.exe 5023 KB------ Norton Partition Magic 8.0 for XP and 98.exe 7434 KB------ NVU 1.023.sfx.exe 1940 KB------ O&O Format Recovery 4.0.exe 4367 KB------ Opera 9.01.exe 3603 KB------ Opera Browser 8.54.exe 3715 KB------ Passware Kit 7.9.exe 3037 KB------ PPTminimizer 2006 1.8.sfx.exe 2288 KB------ Registry Mechanic 5.02.exe 8547 KB------ Skype 2.5.exe 5437 KB------ Sunbird 0.3a2.sfx.exe 7990 KB------ Thunderbird 1.5.0.5.exe 2902 KB------ Total Video Convertor v2.603.sfx.exe 1469 KB------ Ultra Iso 7.6.6.exe 8301 KB------ VLC 0.8.5.exe 3346 KB------ Winace v2.65.exe 1078 KB------ Winamp 5.1.exe 5644 KB------ Winamp 5.21 Pro.exe 5272 KB------ WinAvi Video Converter 7.1.exe 1426 KB------ WinFuture XP-ISO-Builder 3.0.sfx.exe 1988 KB------ WinHTTrack 3.30.sfx.exe 1236 KB------ WinRar 3.5.exe 1382 KB------ WinRAR 3.6b8.exe