在線請教關於買電腦的問題，請各位大俠不吝賜教！

手上的筆記本電腦壞掉了，現在打算買一台台式電腦。到戴爾的網站上看了，看了兩款，請高手們給點意見。我買電腦主要就是上上網，寫寫東西，還有就是存儲我的數碼相片。我把兩款電腦的配置都抄了下來。

Dimension E521 （home office Desktop） -- $699.00

Processor – AMD AthlonTM 64x2 Dual-Core 4000+
Operating System – Genuine Windows Vista Home Premium
Monitor – 19 inch UltrasharpTM SP1908FP Digital Flat Panel
Memory – 2 GB Dual Channel DDR2 SDRAM at 667MHZ-2DIMMS
Hard Drive – 250 GB Serial ATA Hard Drive (7200 RPM) W/ Data Burst Cache
CD ROM/DVD ROM – 16 x DVD +/- RW Drive


Dell(TM) Dimension(TM) 9200 Desktop (for small business) – $699.00

Processor – Intel® Core™ 2 Duo Processor E4300 (2MB L2 cache, 1.8GHZ, 800FSB)
Operating System – Genuine Windows XP Home Edition
Monitor – 20 inch E207WFP Digital Flat Panel
Memory – 1 GB Dual Channel DDR2 SDRAM at 667MHZ-2DIMMS
Hard Drive – 80 GB Serial ATA Hard Drive (7200 RPM) W/ DataBurst CacheTM
CD ROM/DVD ROM – Single Drive: 16 x CD/DVD burner (DVD +/- RW) w/double layer writer capability

其它問題：
CD or DVD Drive --
Dual Drives: 48x Combo + 16x DVD+/-RW w/ dbl layer write capable
Dual Drives: 16x DVD-ROM Drive + 16x DVD+/-RW w/ dbl layer write capable 如果我隻是想刻錄CD，需要裝哪一個？

Monitor -- E228WFP Widescreen Digital Flat Panel 和UltrasharpTM SP1908FP Digital Flat Panel有什麽不同？要不要換呢？

Video Card -- 隨機裝的NVIDZA GeForce 6150 LE Integrated Graphics GPU, 用不用換成256mb NVIDIA GeForce 7300 LE Turbo Cache?

Sound Cards -- 隨機裝的Integrated 7.1 Channel Audio, 用不用換成 Integrated Sound Blaster Audigy HD Software Edition?

我現在是無線上網，請問我得買什麽型號的wireless broadband router呢？多謝各位的指教！